57505490 has 16 divisors (see below), whose sum is σ = 118297152. Its totient is φ = 19716144.

The previous prime is 57505453. The next prime is 57505499. The reversal of 57505490 is 9450575.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 57505490.

It is not an unprimeable number, because it can be changed into a prime (57505499) 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, 410684 + ... + 410823.

It is an arithmetic number, because the mean of its divisors is an integer number (7393572).

Almost surely, 2^57505490 is an apocalyptic number.

57505490 is an abundant number, since it is smaller than the sum of its proper divisors (60791662).

57505490 is a wasteful number, since it uses less digits than its factorization.

57505490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821521.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 57505490 is about 7583.2374352911. The cubic root of 57505490 is about 385.9844150598.

The spelling of 57505490 in words is "fifty-seven million, five hundred five thousand, four hundred ninety".