137172051 has 12 divisors (see below), whose sum is σ = 200364840. Its totient is φ = 90420000.

The previous prime is 137172047. The next prime is 137172053. The reversal of 137172051 is 150271731.

It is a happy number.

It is not a de Polignac number, because 137172051 - 2² = 137172047 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84825 + ... + 86426.

It is an arithmetic number, because the mean of its divisors is an integer number (16697070).

Almost surely, 2^137172051 is an apocalyptic number.

137172051 is a deficient number, since it is larger than the sum of its proper divisors (63192789).

137172051 is a wasteful number, since it uses less digits than its factorization.

137172051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171346 (or 171343 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 137172051 is about 11712.0472591260. The cubic root of 137172051 is about 515.7293853237.

The spelling of 137172051 in words is "one hundred thirty-seven million, one hundred seventy-two thousand, fifty-one".