137172500 has 30 divisors (see below), whose sum is σ = 299974290. Its totient is φ = 54868000.

The previous prime is 137172499. The next prime is 137172583. The reversal of 137172500 is 5271731.

It can be written as a sum of positive squares in 5 ways, for example, as 85303696 + 51868804 = 9236^2 + 7202^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 137172500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 24935 + ... + 29934.

It is an arithmetic number, because the mean of its divisors is an integer number (9999143).

Almost surely, 2^137172500 is an apocalyptic number.

137172500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137172500 is an abundant number, since it is smaller than the sum of its proper divisors (162801790).

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

137172500 is an equidigital number, since it uses as much as digits as its factorization.

137172500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54893 (or 54876 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 137172500 is about 11712.0664274072. The cubic root of 137172500 is about 515.7299480288.

The spelling of 137172500 in words is "one hundred thirty-seven million, one hundred seventy-two thousand, five hundred".