57995561 has 6 divisors (see below), whose sum is σ = 62800110. Its totient is φ = 53534208.

The previous prime is 57995557. The next prime is 57995573. The reversal of 57995561 is 16559975.

57995561 = 1481² + 1482² + ... + 1506².

It can be written as a sum of positive squares in 3 ways, for example, as 2343961 + 55651600 = 1531^2 + 7460^2 .

It is not a de Polignac number, because 57995561 - 2² = 57995557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57935561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 171416 + ... + 171753.

It is an arithmetic number, because the mean of its divisors is an integer number (10466685).

Almost surely, 2^57995561 is an apocalyptic number.

It is an amenable number.

57995561 is a deficient number, since it is larger than the sum of its proper divisors (4804549).

57995561 is a wasteful number, since it uses less digits than its factorization.

57995561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343195 (or 343182 counting only the distinct ones).

The product of its digits is 425250, while the sum is 47.

The square root of 57995561 is about 7615.4816656598. The cubic root of 57995561 is about 387.0777886261.

The spelling of 57995561 in words is "fifty-seven million, nine hundred ninety-five thousand, five hundred sixty-one".