157204971 has 48 divisors (see below), whose sum is σ = 290803968. Its totient is φ = 79444800.

The previous prime is 157204963. The next prime is 157204973. The reversal of 157204971 is 179402751.

It is a happy number.

It is not a de Polignac number, because 157204971 - 2³ = 157204963 is a prime.

It is a super-2 number, since 2×157204971² = 49426805814221682, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (157204973) 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, 22576 + ... + 28706.

It is an arithmetic number, because the mean of its divisors is an integer number (6058416).

Almost surely, 2^157204971 is an apocalyptic number.

157204971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

157204971 is a deficient number, since it is larger than the sum of its proper divisors (133598997).

157204971 is a wasteful number, since it uses less digits than its factorization.

157204971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6192 (or 6189 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 157204971 is about 12538.1406516277. The cubic root of 157204971 is about 539.7037366660.

The spelling of 157204971 in words is "one hundred fifty-seven million, two hundred four thousand, nine hundred seventy-one".