157385520 has 60 divisors (see below), whose sum is σ = 528555456. Its totient is φ = 41969280.

The previous prime is 157385497. The next prime is 157385521. The reversal of 157385520 is 25583751.

157385520 is a `hidden beast` number, since 1 + 57 + 3 + 85 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (157385521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108576 + ... + 110015.

Almost surely, 2^157385520 is an apocalyptic number.

157385520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157385520 is an abundant number, since it is smaller than the sum of its proper divisors (371169936).

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

157385520 is a wasteful number, since it uses less digits than its factorization.

157385520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218610 (or 218601 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 157385520 is about 12545.3385765391. The cubic root of 157385520 is about 539.9102731576.

The spelling of 157385520 in words is "one hundred fifty-seven million, three hundred eighty-five thousand, five hundred twenty".