157217956 has 12 divisors (see below), whose sum is σ = 314435968. Its totient is φ = 67379112.

The previous prime is 157217941. The next prime is 157217987. The reversal of 157217956 is 659712751.

157217956 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2807436 + ... + 2807491.

Almost surely, 2^157217956 is an apocalyptic number.

It is an amenable number.

157217956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

157217956 is a wasteful number, since it uses less digits than its factorization.

157217956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5614938 (or 5614936 counting only the distinct ones).

The product of its digits is 132300, while the sum is 43.

The square root of 157217956 is about 12538.6584609359. The cubic root of 157217956 is about 539.7185959503.

The spelling of 157217956 in words is "one hundred fifty-seven million, two hundred seventeen thousand, nine hundred fifty-six".