57390404 has 24 divisors (see below), whose sum is σ = 104330520. Its totient is φ = 27599616.

The previous prime is 57390383. The next prime is 57390407. The reversal of 57390404 is 40409375.

It can be written as a sum of positive squares in 4 ways, for example, as 31360000 + 26030404 = 5600^2 + 5102^2 .

It is not an unprimeable number, because it can be changed into a prime (57390407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10994 + ... + 15350.

It is an arithmetic number, because the mean of its divisors is an integer number (4347105).

Almost surely, 2^57390404 is an apocalyptic number.

It is an amenable number.

57390404 is a deficient number, since it is larger than the sum of its proper divisors (46940116).

57390404 is a wasteful number, since it uses less digits than its factorization.

57390404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487 (or 4485 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 57390404 is about 7575.6454510490. The cubic root of 57390404 is about 385.7267523046.

Adding to 57390404 its reverse (40409375), we get a palindrome (97799779).

The spelling of 57390404 in words is "fifty-seven million, three hundred ninety thousand, four hundred four".