157731441 has 24 divisors (see below), whose sum is σ = 252543744. Its totient is φ = 87222240.

The previous prime is 157731433. The next prime is 157731449. The reversal of 157731441 is 144137751.

It is a happy number.

157731441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (157731433) and next prime (157731449).

It is not a de Polignac number, because 157731441 - 2³ = 157731433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157731449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12750 + ... + 21863.

It is an arithmetic number, because the mean of its divisors is an integer number (10522656).

Almost surely, 2^157731441 is an apocalyptic number.

It is an amenable number.

157731441 is a deficient number, since it is larger than the sum of its proper divisors (94812303).

157731441 is a wasteful number, since it uses less digits than its factorization.

157731441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34661 (or 34654 counting only the distinct ones).

The product of its digits is 11760, while the sum is 33.

The square root of 157731441 is about 12559.1178432245. The cubic root of 157731441 is about 540.3055438193.

The spelling of 157731441 in words is "one hundred fifty-seven million, seven hundred thirty-one thousand, four hundred forty-one".