157992471 has 32 divisors (see below), whose sum is σ = 288081920. Its totient is φ = 83335392.

The previous prime is 157992463. The next prime is 157992473. The reversal of 157992471 is 174299751.

157992471 is a `hidden beast` number, since 1 + 579 + 9 + 2 + 4 + 71 = 666.

157992471 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 157992471 - 2³ = 157992463 is a prime.

It is a super-3 number, since 3×157992471³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157992473) 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, 29695 + ... + 34608.

It is an arithmetic number, because the mean of its divisors is an integer number (9002560).

Almost surely, 2^157992471 is an apocalyptic number.

157992471 is a deficient number, since it is larger than the sum of its proper divisors (130089449).

157992471 is a wasteful number, since it uses less digits than its factorization.

157992471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64332 (or 64326 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 157992471 is about 12569.5055988690. The cubic root of 157992471 is about 540.6034303756.

The spelling of 157992471 in words is "one hundred fifty-seven million, nine hundred ninety-two thousand, four hundred seventy-one".