157173172 has 24 divisors (see below), whose sum is σ = 303439752. Its totient is φ = 70771200.

The previous prime is 157173157. The next prime is 157173209. The reversal of 157173172 is 271371751.

It is a happy number.

157173172 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7257636 + 149915536 = 2694^2 + 12244^2 .

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34729 + ... + 38992.

It is an arithmetic number, because the mean of its divisors is an integer number (12643323).

Almost surely, 2^157173172 is an apocalyptic number.

It is an amenable number.

157173172 is a deficient number, since it is larger than the sum of its proper divisors (146266580).

157173172 is a wasteful number, since it uses less digits than its factorization.

157173172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73779 (or 73777 counting only the distinct ones).

The product of its digits is 10290, while the sum is 34.

The square root of 157173172 is about 12536.8724967593. The cubic root of 157173172 is about 539.6673442706.

The spelling of 157173172 in words is "one hundred fifty-seven million, one hundred seventy-three thousand, one hundred seventy-two".