137115521 has 8 divisors (see below), whose sum is σ = 140652288. Its totient is φ = 133588000.

The previous prime is 137115467. The next prime is 137115541. The reversal of 137115521 is 125511731.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137115521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137115541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35516 + ... + 39186.

It is an arithmetic number, because the mean of its divisors is an integer number (17581536).

Almost surely, 2^137115521 is an apocalyptic number.

It is an amenable number.

137115521 is a deficient number, since it is larger than the sum of its proper divisors (3536767).

137115521 is an equidigital number, since it uses as much as digits as its factorization.

137115521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623.

The product of its digits is 1050, while the sum is 26.

The square root of 137115521 is about 11709.6336834249. The cubic root of 137115521 is about 515.6585298110.

The spelling of 137115521 in words is "one hundred thirty-seven million, one hundred fifteen thousand, five hundred twenty-one".