157813887 has 48 divisors (see below), whose sum is σ = 266595840. Its totient is φ = 81280320.

The previous prime is 157813861. The next prime is 157813891. The reversal of 157813887 is 788318751.

It is a happy number.

157813887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157813887 - 2²⁷ = 23596159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157813837) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 439414 + ... + 439772.

It is an arithmetic number, because the mean of its divisors is an integer number (5554080).

Almost surely, 2^157813887 is an apocalyptic number.

157813887 is a deficient number, since it is larger than the sum of its proper divisors (108781953).

157813887 is a wasteful number, since it uses less digits than its factorization.

157813887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 553 counting only the distinct ones).

The product of its digits is 376320, while the sum is 48.

The square root of 157813887 is about 12562.3997309431. The cubic root of 157813887 is about 540.3996664018.

The spelling of 157813887 in words is "one hundred fifty-seven million, eight hundred thirteen thousand, eight hundred eighty-seven".