57491404 has 12 divisors (see below), whose sum is σ = 101228344. Its totient is φ = 28569024.

The previous prime is 57491383. The next prime is 57491449. The reversal of 57491404 is 40419475.

It is a self number, because there is not a number n which added to its sum of digits gives 57491404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43437 + ... + 44740.

Almost surely, 2^57491404 is an apocalyptic number.

It is an amenable number.

57491404 is a deficient number, since it is larger than the sum of its proper divisors (43736940).

57491404 is a wasteful number, since it uses less digits than its factorization.

57491404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88344 (or 88342 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 57491404 is about 7582.3086194114. The cubic root of 57491404 is about 385.9528967910.

The spelling of 57491404 in words is "fifty-seven million, four hundred ninety-one thousand, four hundred four".