137172052 has 12 divisors (see below), whose sum is σ = 240872436. Its totient is φ = 68351360.

The previous prime is 137172047. The next prime is 137172053. The reversal of 137172052 is 250271731.

It can be written as a sum of positive squares in 2 ways, for example, as 108076816 + 29095236 = 10396^2 + 5394^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 137172052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137172053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57349 + ... + 59692.

It is an arithmetic number, because the mean of its divisors is an integer number (20072703).

Almost surely, 2^137172052 is an apocalyptic number.

It is an amenable number.

137172052 is a deficient number, since it is larger than the sum of its proper divisors (103700384).

137172052 is a wasteful number, since it uses less digits than its factorization.

137172052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117338 (or 117336 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 137172052 is about 11712.0473018170. The cubic root of 137172052 is about 515.7293865769.

The spelling of 137172052 in words is "one hundred thirty-seven million, one hundred seventy-two thousand, fifty-two".