137917506 has 8 divisors (see below), whose sum is σ = 275835024. Its totient is φ = 45972500.

The previous prime is 137917487. The next prime is 137917519. The reversal of 137917506 is 605719731.

It is a sphenic number, since it is the product of 3 distinct primes.

137917506 is an admirable number.

It is a super-2 number, since 2×137917506² = 38042476922520072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11493120 + ... + 11493131.

It is an arithmetic number, because the mean of its divisors is an integer number (34479378).

Almost surely, 2^137917506 is an apocalyptic number.

137917506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

137917506 is a wasteful number, since it uses less digits than its factorization.

137917506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22986256.

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 137917506 is about 11743.8284217712. The cubic root of 137917506 is about 516.6619336831.

The spelling of 137917506 in words is "one hundred thirty-seven million, nine hundred seventeen thousand, five hundred six".