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55800580724 = 22729293234539
BaseRepresentation
bin110011111101111110…
…010100101001110100
312100000211122012110222
4303331332110221310
51403234422040344
641345012033512
74013535052550
oct637576245164
9170024565428
1055800580724
1121734a78219
12a993602898
135353725905
1429b4c6c860
1516b8c3a5ee
hexcfdf94a74

55800580724 has 48 divisors (see below), whose sum is σ = 115843996800. Its totient is φ = 23010992256.

The previous prime is 55800580709. The next prime is 55800580757. The reversal of 55800580724 is 42708500855.

It is a super-2 number, since 2×558005807242 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120647 + ... + 355185.

It is an arithmetic number, because the mean of its divisors is an integer number (2413416600).

Almost surely, 255800580724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55800580724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57921998400).

55800580724 is an abundant number, since it is smaller than the sum of its proper divisors (60043416076).

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

55800580724 is a wasteful number, since it uses less digits than its factorization.

55800580724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234872 (or 234870 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 44.

The spelling of 55800580724 in words is "fifty-five billion, eight hundred million, five hundred eighty thousand, seven hundred twenty-four".

Divisors: 1 2 4 7 14 28 29 58 116 203 293 406 586 812 1172 2051 4102 8204 8497 16994 33988 59479 118958 234539 237916 469078 938156 1641773 3283546 6567092 6801631 13603262 27206524 47611417 68719927 95222834 137439854 190445668 274879708 481039489 962078978 1924157956 1992877883 3985755766 7971511532 13950145181 27900290362 55800580724