157191256 has 32 divisors (see below), whose sum is σ = 311616000. Its totient is φ = 74130336.

The previous prime is 157191247. The next prime is 157191257. The reversal of 157191256 is 652191751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157191257) 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 in 7 ways as a sum of consecutive naturals, for example, 34165 + ... + 38491.

It is an arithmetic number, because the mean of its divisors is an integer number (9738000).

Almost surely, 2^157191256 is an apocalyptic number.

It is an amenable number.

157191256 is a deficient number, since it is larger than the sum of its proper divisors (154424744).

157191256 is a wasteful number, since it uses less digits than its factorization.

157191256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591 (or 4587 counting only the distinct ones).

The product of its digits is 18900, while the sum is 37.

The square root of 157191256 is about 12537.5937085232. The cubic root of 157191256 is about 539.6880411233.

The spelling of 157191256 in words is "one hundred fifty-seven million, one hundred ninety-one thousand, two hundred fifty-six".