57616161 has 4 divisors (see below), whose sum is σ = 76821552. Its totient is φ = 38410772.

The previous prime is 57616159. The next prime is 57616231. The reversal of 57616161 is 16161675.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57616161 - 2¹ = 57616159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57696161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9602691 + ... + 9602696.

It is an arithmetic number, because the mean of its divisors is an integer number (19205388).

Almost surely, 2^57616161 is an apocalyptic number.

It is an amenable number.

57616161 is a deficient number, since it is larger than the sum of its proper divisors (19205391).

57616161 is a wasteful number, since it uses less digits than its factorization.

57616161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19205390.

The product of its digits is 7560, while the sum is 33.

The square root of 57616161 is about 7590.5310090928. The cubic root of 57616161 is about 386.2318691545.

The spelling of 57616161 in words is "fifty-seven million, six hundred sixteen thousand, one hundred sixty-one".