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55805525750 = 2531331553901
BaseRepresentation
bin110011111110010001…
…001011111011110110
312100001011221102210002
4303332101023323312
51403242203311000
641345310031302
74013625066542
oct637621137366
9170034842702
1055805525750
1121737845517
12a9951a8532
135354767670
1429b5798a22
1516b93b58d5
hexcfe44bef6

55805525750 has 64 divisors (see below), whose sum is σ = 116133308928. Its totient is φ = 19940400000.

The previous prime is 55805525747. The next prime is 55805525767. The reversal of 55805525750 is 5752550855.

It is a super-2 number, since 2×558055257502 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55805525695 and 55805525704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176201 + ... + 377700.

It is an arithmetic number, because the mean of its divisors is an integer number (1814582952).

Almost surely, 255805525750 is an apocalyptic number.

55805525750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55805525750 is an abundant number, since it is smaller than the sum of its proper divisors (60327783178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55805525750 is a wasteful number, since it uses less digits than its factorization.

55805525750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553962 (or 553952 counting only the distinct ones).

The product of its (nonzero) digits is 1750000, while the sum is 47.

The spelling of 55805525750 in words is "fifty-five billion, eight hundred five million, five hundred twenty-five thousand, seven hundred fifty".

Divisors: 1 2 5 10 13 25 26 31 50 62 65 125 130 155 250 310 325 403 650 775 806 1550 1625 2015 3250 3875 4030 7750 10075 20150 50375 100750 553901 1107802 2769505 5539010 7200713 13847525 14401426 17170931 27695050 34341862 36003565 69237625 72007130 85854655 138475250 171709310 180017825 223222103 360035650 429273275 446444206 858546550 900089125 1116110515 1800178250 2146366375 2232221030 4292732750 5580552575 11161105150 27902762875 55805525750