137172972 has 24 divisors (see below), whose sum is σ = 320479600. Its totient is φ = 45665856.

The previous prime is 137172961. The next prime is 137172991. The reversal of 137172972 is 279271731.

137172972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 137172972.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3054 + ... + 16842.

Almost surely, 2^137172972 is an apocalyptic number.

137172972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

137172972 is an abundant number, since it is smaller than the sum of its proper divisors (183306628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137172972 is a wasteful number, since it uses less digits than its factorization.

137172972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14625 (or 14623 counting only the distinct ones).

The product of its digits is 37044, while the sum is 39.

The square root of 137172972 is about 11712.0865775489. The cubic root of 137172972 is about 515.7305395571.

The spelling of 137172972 in words is "one hundred thirty-seven million, one hundred seventy-two thousand, nine hundred seventy-two".