157172656 has 10 divisors (see below), whose sum is σ = 304522052. Its totient is φ = 78586320.

The previous prime is 157172627. The next prime is 157172657. The reversal of 157172656 is 656271751.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (157172657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4911630 + ... + 4911661.

Almost surely, 2^157172656 is an apocalyptic number.

157172656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

157172656 is a deficient number, since it is larger than the sum of its proper divisors (147349396).

157172656 is an equidigital number, since it uses as much as digits as its factorization.

157172656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9823299 (or 9823293 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 157172656 is about 12536.8519174472. The cubic root of 157172656 is about 539.6667536934. Note that the first 3 decimals are identical.

The spelling of 157172656 in words is "one hundred fifty-seven million, one hundred seventy-two thousand, six hundred fifty-six".