137521011 has 16 divisors (see below), whose sum is σ = 189227808. Its totient is φ = 88780800.

The previous prime is 137520989. The next prime is 137521019. The reversal of 137521011 is 110125731.

It is a happy number.

137521011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 137521011 - 2⁶ = 137520947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137521019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12771 + ... + 20931.

It is an arithmetic number, because the mean of its divisors is an integer number (11826738).

Almost surely, 2^137521011 is an apocalyptic number.

137521011 is a deficient number, since it is larger than the sum of its proper divisors (51706797).

137521011 is a wasteful number, since it uses less digits than its factorization.

137521011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8342.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 137521011 is about 11726.9352773860. The cubic root of 137521011 is about 516.1663463741.

Adding to 137521011 its reverse (110125731), we get a palindrome (247646742).

The spelling of 137521011 in words is "one hundred thirty-seven million, five hundred twenty-one thousand, eleven".