137521036 has 12 divisors (see below), whose sum is σ = 244051920. Its totient is φ = 67791920.

The previous prime is 137521019. The next prime is 137521037. The reversal of 137521036 is 630125731.

It is a junction number, because it is equal to n+sod(n) for n = 137520995 and 137521013.

It is not an unprimeable number, because it can be changed into a prime (137521037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241831 + ... + 242398.

It is an arithmetic number, because the mean of its divisors is an integer number (20337660).

Almost surely, 2^137521036 is an apocalyptic number.

It is an amenable number.

137521036 is a deficient number, since it is larger than the sum of its proper divisors (106530884).

137521036 is a wasteful number, since it uses less digits than its factorization.

137521036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484304 (or 484302 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 137521036 is about 11726.9363433081. The cubic root of 137521036 is about 516.1663776521.

Adding to 137521036 its reverse (630125731), we get a palindrome (767646767).

The spelling of 137521036 in words is "one hundred thirty-seven million, five hundred twenty-one thousand, thirty-six".