157322520 has 256 divisors, whose sum is σ = 560332800. Its totient is φ = 39191040.

The previous prime is 157322479. The next prime is 157322537. The reversal of 157322520 is 25223751.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1238697 + ... + 1238823.

It is an arithmetic number, because the mean of its divisors is an integer number (2188800).

Almost surely, 2^157322520 is an apocalyptic number.

157322520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157322520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280166400).

157322520 is an abundant number, since it is smaller than the sum of its proper divisors (403010280).

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

157322520 is a wasteful number, since it uses less digits than its factorization.

157322520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 157322520 is about 12542.8274324412. The cubic root of 157322520 is about 539.8382231436.

The spelling of 157322520 in words is "one hundred fifty-seven million, three hundred twenty-two thousand, five hundred twenty".