157501972 has 12 divisors (see below), whose sum is σ = 275799636. Its totient is φ = 78702080.

The previous prime is 157501969. The next prime is 157501997. The reversal of 157501972 is 279105751.

157501972 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 66031876 + 91470096 = 8126^2 + 9564^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4429 + ... + 18292.

It is an arithmetic number, because the mean of its divisors is an integer number (22983303).

Almost surely, 2^157501972 is an apocalyptic number.

It is an amenable number.

157501972 is a deficient number, since it is larger than the sum of its proper divisors (118297664).

157501972 is a wasteful number, since it uses less digits than its factorization.

157501972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24458 (or 24456 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 37.

The square root of 157501972 is about 12549.9789641258. The cubic root of 157501972 is about 540.0434030043.

The spelling of 157501972 in words is "one hundred fifty-seven million, five hundred one thousand, nine hundred seventy-two".