157311520 has 24 divisors (see below), whose sum is σ = 371648844. Its totient is φ = 62924544.

The previous prime is 157311509. The next prime is 157311521. The reversal of 157311520 is 25113751.

157311520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 155451024 + 1860496 = 12468^2 + 1364^2 .

It is not an unprimeable number, because it can be changed into a prime (157311521) 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, 491439 + ... + 491758.

Almost surely, 2^157311520 is an apocalyptic number.

157311520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157311520 is an abundant number, since it is smaller than the sum of its proper divisors (214337324).

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

157311520 is an equidigital number, since it uses as much as digits as its factorization.

157311520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983212 (or 983204 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 157311520 is about 12542.3889271542. The cubic root of 157311520 is about 539.8256410100.

The spelling of 157311520 in words is "one hundred fifty-seven million, three hundred eleven thousand, five hundred twenty".