57031401 has 24 divisors (see below), whose sum is σ = 88750272. Its totient is φ = 31903200.

The previous prime is 57031397. The next prime is 57031411. The reversal of 57031401 is 10413075.

It is not a de Polignac number, because 57031401 - 2² = 57031397 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (57031411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270186 + ... + 270396.

It is an arithmetic number, because the mean of its divisors is an integer number (3697928).

Almost surely, 2^57031401 is an apocalyptic number.

It is an amenable number.

57031401 is a deficient number, since it is larger than the sum of its proper divisors (31718871).

57031401 is an equidigital number, since it uses as much as digits as its factorization.

57031401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 57031401 is about 7551.9137309691. The cubic root of 57031401 is about 384.9207707882.

Adding to 57031401 its reverse (10413075), we get a palindrome (67444476).

The spelling of 57031401 in words is "fifty-seven million, thirty-one thousand, four hundred one".