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52975806081 = 3112117608187
BaseRepresentation
bin110001010101100110…
…101010011010000001
312001201222022210010220
4301111212222122001
51331443301243311
640200423213253
73553534631142
oct612546523201
9161658283126
1052975806081
1120515509220
12a3255a7229
134cc3432c23
1427c7a39ac9
1515a0c5a206
hexc559aa681

52975806081 has 16 divisors (see below), whose sum is σ = 77420921088. Its totient is φ = 31954381200.

The previous prime is 52975806053. The next prime is 52975806139. The reversal of 52975806081 is 18060857925.

It is not a de Polignac number, because 52975806081 - 25 = 52975806049 is a prime.

It is a super-2 number, since 2×529758060812 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52975806041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3797131 + ... + 3811056.

It is an arithmetic number, because the mean of its divisors is an integer number (4838807568).

Almost surely, 252975806081 is an apocalyptic number.

It is an amenable number.

52975806081 is a deficient number, since it is larger than the sum of its proper divisors (24445115007).

52975806081 is a wasteful number, since it uses less digits than its factorization.

52975806081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7608412.

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 52975806081 in words is "fifty-two billion, nine hundred seventy-five million, eight hundred six thousand, eighty-one".

Divisors: 1 3 11 33 211 633 2321 6963 7608187 22824561 83690057 251070171 1605327457 4815982371 17658602027 52975806081