57156461 has 4 divisors (see below), whose sum is σ = 57412992. Its totient is φ = 56899932.

The previous prime is 57156413. The next prime is 57156493. The reversal of 57156461 is 16465175.

57156461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-57156461 is a prime.

It is a super-2 number, since 2×57156461² = 6533722068089042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57156401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127931 + ... + 128376.

It is an arithmetic number, because the mean of its divisors is an integer number (14353248).

Almost surely, 2^57156461 is an apocalyptic number.

It is an amenable number.

57156461 is a deficient number, since it is larger than the sum of its proper divisors (256531).

57156461 is a wasteful number, since it uses less digits than its factorization.

57156461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256530.

The product of its digits is 25200, while the sum is 35.

The square root of 57156461 is about 7560.1892172088. The cubic root of 57156461 is about 385.2019202796.

The spelling of 57156461 in words is "fifty-seven million, one hundred fifty-six thousand, four hundred sixty-one".