57049231 has 4 divisors (see below), whose sum is σ = 57202552. Its totient is φ = 56895912.

The previous prime is 57049219. The next prime is 57049241. The reversal of 57049231 is 13294075.

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 57049231 - 2⁵ = 57049199 is a prime.

It is a super-2 number, since 2×57049231² = 6509229515382722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57049193 and 57049202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57049241) 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, 76101 + ... + 76846.

It is an arithmetic number, because the mean of its divisors is an integer number (14300638).

Almost surely, 2^57049231 is an apocalyptic number.

57049231 is a deficient number, since it is larger than the sum of its proper divisors (153321).

57049231 is a wasteful number, since it uses less digits than its factorization.

57049231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153320.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 57049231 is about 7553.0941341943. The cubic root of 57049231 is about 384.9608798166.

The spelling of 57049231 in words is "fifty-seven million, forty-nine thousand, two hundred thirty-one".