137215715 has 32 divisors (see below), whose sum is σ = 204812160. Its totient is φ = 85929984.

The previous prime is 137215699. The next prime is 137215763. The reversal of 137215715 is 517512731.

It is not a de Polignac number, because 137215715 - 2⁴ = 137215699 is a prime.

It is a super-2 number, since 2×137215715² = 37656304885922450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42581 + ... + 45689.

It is an arithmetic number, because the mean of its divisors is an integer number (6400380).

Almost surely, 2^137215715 is an apocalyptic number.

137215715 is a deficient number, since it is larger than the sum of its proper divisors (67596445).

137215715 is a wasteful number, since it uses less digits than its factorization.

137215715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231.

The product of its digits is 7350, while the sum is 32.

The square root of 137215715 is about 11713.9111743260. The cubic root of 137215715 is about 515.7841010834.

The spelling of 137215715 in words is "one hundred thirty-seven million, two hundred fifteen thousand, seven hundred fifteen".