52158438 has 32 divisors (see below), whose sum is σ = 118379520. Its totient is φ = 17015400.

The previous prime is 52158409. The next prime is 52158451. The reversal of 52158438 is 83485125.

It is a happy number.

52158438 is a `hidden beast` number, since 5 + 215 + 8 + 438 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7738 + ... + 12813.

It is an arithmetic number, because the mean of its divisors is an integer number (3699360).

Almost surely, 2^52158438 is an apocalyptic number.

52158438 is an abundant number, since it is smaller than the sum of its proper divisors (66221082).

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

52158438 is a wasteful number, since it uses less digits than its factorization.

52158438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20609 (or 20603 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 52158438 is about 7222.0798943241. The cubic root of 52158438 is about 373.6298156840.

The spelling of 52158438 in words is "fifty-two million, one hundred fifty-eight thousand, four hundred thirty-eight".