137520807 has 8 divisors (see below), whose sum is σ = 184805376. Its totient is φ = 90958392.

The previous prime is 137520797. The next prime is 137520809. The reversal of 137520807 is 708025731.

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

It is not a de Polignac number, because 137520807 - 2²⁴ = 120743591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137520809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180093 + ... + 180854.

It is an arithmetic number, because the mean of its divisors is an integer number (23100672).

Almost surely, 2^137520807 is an apocalyptic number.

137520807 is a deficient number, since it is larger than the sum of its proper divisors (47284569).

137520807 is a wasteful number, since it uses less digits than its factorization.

137520807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361077.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 137520807 is about 11726.9265794581. The cubic root of 137520807 is about 516.1660911452.

The spelling of 137520807 in words is "one hundred thirty-seven million, five hundred twenty thousand, eight hundred seven".