57239007858 has 30 divisors (see below), whose sum is σ = 128264600541. Its totient is φ = 19078654248.

The previous prime is 57239007829. The next prime is 57239007877. The reversal of 57239007858 is 85870093275.

It can be written as a sum of positive squares in 2 ways, for example, as 50168384289 + 7070623569 = 223983^2 + 84087^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=169173.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3035716 + ... + 3054512.

Almost surely, 2^57239007858 is an apocalyptic number.

57239007858 is an abundant number, since it is smaller than the sum of its proper divisors (71025592683).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57239007858 is an frugal number, since it uses more digits than its factorization.

57239007858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37608 (or 18802 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 57239007858 in words is "fifty-seven billion, two hundred thirty-nine million, seven thousand, eight hundred fifty-eight".