57776881 has 4 divisors (see below), whose sum is σ = 58473072. Its totient is φ = 57080692.

The previous prime is 57776833. The next prime is 57776893. The reversal of 57776881 is 18867775.

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 57776881 - 2²⁵ = 24222449 is a prime.

It is a super-2 number, since 2×57776881² = 6676335956176322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57776801) 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, 347971 + ... + 348136.

It is an arithmetic number, because the mean of its divisors is an integer number (14618268).

Almost surely, 2^57776881 is an apocalyptic number.

It is an amenable number.

57776881 is a deficient number, since it is larger than the sum of its proper divisors (696191).

57776881 is an equidigital number, since it uses as much as digits as its factorization.

57776881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696190.

The product of its digits is 658560, while the sum is 49.

The square root of 57776881 is about 7601.1105109714. The cubic root of 57776881 is about 386.5906663782.

The spelling of 57776881 in words is "fifty-seven million, seven hundred seventy-six thousand, eight hundred eighty-one".