137232520 has 16 divisors (see below), whose sum is σ = 308773260. Its totient is φ = 54892992.

The previous prime is 137232499. The next prime is 137232533. The reversal of 137232520 is 25232731.

It can be written as a sum of positive squares in 2 ways, for example, as 129823236 + 7409284 = 11394^2 + 2722^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1715367 + ... + 1715446.

Almost surely, 2^137232520 is an apocalyptic number.

137232520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137232520 is an abundant number, since it is smaller than the sum of its proper divisors (171540740).

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

137232520 is a wasteful number, since it uses less digits than its factorization.

137232520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430824 (or 3430820 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 137232520 is about 11714.6284618847. The cubic root of 137232520 is about 515.8051564899.

The spelling of 137232520 in words is "one hundred thirty-seven million, two hundred thirty-two thousand, five hundred twenty".