57397087 has 4 divisors (see below), whose sum is σ = 62615016. Its totient is φ = 52179160.

The previous prime is 57397057. The next prime is 57397097. The reversal of 57397087 is 78079375.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-57397087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57397037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2608948 + ... + 2608969.

It is an arithmetic number, because the mean of its divisors is an integer number (15653754).

Almost surely, 2^57397087 is an apocalyptic number.

57397087 is a deficient number, since it is larger than the sum of its proper divisors (5217929).

57397087 is a wasteful number, since it uses less digits than its factorization.

57397087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217928.

The product of its (nonzero) digits is 370440, while the sum is 46.

The square root of 57397087 is about 7576.0865227372. The cubic root of 57397087 is about 385.7417240981.

The spelling of 57397087 in words is "fifty-seven million, three hundred ninety-seven thousand, eighty-seven".