57156371 has 8 divisors (see below), whose sum is σ = 58684224. Its totient is φ = 55641600.

The previous prime is 57156347. The next prime is 57156391. The reversal of 57156371 is 17365175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57156371 - 2²² = 52962067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57156301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5921 + ... + 12221.

It is an arithmetic number, because the mean of its divisors is an integer number (7335528).

Almost surely, 2^57156371 is an apocalyptic number.

57156371 is a deficient number, since it is larger than the sum of its proper divisors (1527853).

57156371 is a wasteful number, since it uses less digits than its factorization.

57156371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541.

The product of its digits is 22050, while the sum is 35.

The square root of 57156371 is about 7560.1832649745. The cubic root of 57156371 is about 385.2017180966.

The spelling of 57156371 in words is "fifty-seven million, one hundred fifty-six thousand, three hundred seventy-one".