137172907 has 2 divisors, whose sum is σ = 137172908. Its totient is φ = 137172906.

The previous prime is 137172899. The next prime is 137172961. The reversal of 137172907 is 709271731.

137172907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137172907 - 2³ = 137172899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137172307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68586453 + 68586454.

It is an arithmetic number, because the mean of its divisors is an integer number (68586454).

Almost surely, 2^137172907 is an apocalyptic number.

137172907 is a deficient number, since it is larger than the sum of its proper divisors (1).

137172907 is an equidigital number, since it uses as much as digits as its factorization.

137172907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 137172907 is about 11712.0838026373. The cubic root of 137172907 is about 515.7304580967.

The spelling of 137172907 in words is "one hundred thirty-seven million, one hundred seventy-two thousand, nine hundred seven".