57475439 has 4 divisors (see below), whose sum is σ = 65686224. Its totient is φ = 49264656.

The previous prime is 57475427. The next prime is 57475441. The reversal of 57475439 is 93457475.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 57475439 - 2²⁰ = 56426863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57475439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57475489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4105382 + ... + 4105395.

It is an arithmetic number, because the mean of its divisors is an integer number (16421556).

Almost surely, 2^57475439 is an apocalyptic number.

57475439 is a deficient number, since it is larger than the sum of its proper divisors (8210785).

57475439 is an equidigital number, since it uses as much as digits as its factorization.

57475439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210784.

The product of its digits is 529200, while the sum is 44.

The square root of 57475439 is about 7581.2557666920. The cubic root of 57475439 is about 385.9171679225.

The spelling of 57475439 in words is "fifty-seven million, four hundred seventy-five thousand, four hundred thirty-nine".