158572431 has 32 divisors (see below), whose sum is σ = 238993920. Its totient is φ = 103902912.

The previous prime is 158572391. The next prime is 158572459. The reversal of 158572431 is 134275851.

158572431 is a `hidden beast` number, since 1 + 58 + 572 + 4 + 31 = 666.

It is not a de Polignac number, because 158572431 - 2¹¹ = 158570383 is a prime.

It is a super-2 number, since 2×158572431² = 50290431746499522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158572231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 602806 + ... + 603068.

It is an arithmetic number, because the mean of its divisors is an integer number (7468560).

Almost surely, 2^158572431 is an apocalyptic number.

158572431 is a deficient number, since it is larger than the sum of its proper divisors (80421489).

158572431 is a wasteful number, since it uses less digits than its factorization.

158572431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 566 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 158572431 is about 12592.5545859448. The cubic root of 158572431 is about 541.2641063977.

The spelling of 158572431 in words is "one hundred fifty-eight million, five hundred seventy-two thousand, four hundred thirty-one".