55765575081 has 12 divisors (see below), whose sum is σ = 80736309108. Its totient is φ = 37091188224.

The previous prime is 55765575049. The next prime is 55765575127. The reversal of 55765575081 is 18057556755.

55765575081 is a `hidden beast` number, since 5 + 5 + 7 + 6 + 557 + 5 + 0 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21200816025 + 34564759056 = 145605^2 + 185916^2 .

It is not a de Polignac number, because 55765575081 - 2⁵ = 55765575049 is a prime.

It is a super-2 number, since 2×55765575081² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55765575181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7151040 + ... + 7158833.

It is an arithmetic number, because the mean of its divisors is an integer number (6728025759).

Almost surely, 2^55765575081 is an apocalyptic number.

It is an amenable number.

55765575081 is a deficient number, since it is larger than the sum of its proper divisors (24970734027).

55765575081 is a wasteful number, since it uses less digits than its factorization.

55765575081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14310312 (or 14310309 counting only the distinct ones).

The product of its (nonzero) digits is 7350000, while the sum is 54.

The spelling of 55765575081 in words is "fifty-five billion, seven hundred sixty-five million, five hundred seventy-five thousand, eighty-one".