57775231 has 4 divisors (see below), whose sum is σ = 61173792. Its totient is φ = 54376672.

The previous prime is 57775217. The next prime is 57775243. The reversal of 57775231 is 13257775.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57775231 - 2⁵ = 57775199 is a prime.

It is a super-2 number, since 2×57775231² = 6675954634206722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57775271) 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, 1699255 + ... + 1699288.

It is an arithmetic number, because the mean of its divisors is an integer number (15293448).

Almost surely, 2^57775231 is an apocalyptic number.

57775231 is a deficient number, since it is larger than the sum of its proper divisors (3398561).

57775231 is a wasteful number, since it uses less digits than its factorization.

57775231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398560.

The product of its digits is 51450, while the sum is 37.

The square root of 57775231 is about 7601.0019734243. The cubic root of 57775231 is about 386.5869862402.

The spelling of 57775231 in words is "fifty-seven million, seven hundred seventy-five thousand, two hundred thirty-one".