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55805757535 = 5117145731271
BaseRepresentation
bin110011111110010010…
…000100100001011111
312100001012101012201201
4303332102010201133
51403242233220120
641345315020331
74013630053363
oct637622044137
9170035335651
1055805757535
1121737993680
12a99529a6a7
135354819008
1429b58192a3
1516b940e40a
hexcfe48485f

55805757535 has 32 divisors (see below), whose sum is σ = 74248233984. Its totient is φ = 39925536000.

The previous prime is 55805757499. The next prime is 55805757541. The reversal of 55805757535 is 53575750855.

It is not a de Polignac number, because 55805757535 - 29 = 55805757023 is a prime.

It is a super-2 number, since 2×558057575352 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1768950 + ... + 1800220.

It is an arithmetic number, because the mean of its divisors is an integer number (2320257312).

Almost surely, 255805757535 is an apocalyptic number.

55805757535 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55805757535 is a deficient number, since it is larger than the sum of its proper divisors (18442476449).

55805757535 is a wasteful number, since it uses less digits than its factorization.

55805757535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31815.

The product of its (nonzero) digits is 18375000, while the sum is 55.

The spelling of 55805757535 in words is "fifty-five billion, eight hundred five million, seven hundred fifty-seven thousand, five hundred thirty-five".

Divisors: 1 5 11 55 71 355 457 781 2285 3905 5027 25135 31271 32447 156355 162235 343981 356917 1719905 1784585 2220241 11101205 14290847 24422651 71454235 122113255 157199317 785996585 1014650137 5073250685 11161151507 55805757535