137520351 has 6 divisors (see below), whose sum is σ = 198640520. Its totient is φ = 91680228.

The previous prime is 137520337. The next prime is 137520353. The reversal of 137520351 is 153025731.

137520351 is a `hidden beast` number, since 137 + 520 + 3 + 5 + 1 = 666.

137520351 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 137520351 - 2⁹ = 137519839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137520353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7640011 + ... + 7640028.

Almost surely, 2^137520351 is an apocalyptic number.

137520351 is a deficient number, since it is larger than the sum of its proper divisors (61120169).

137520351 is a wasteful number, since it uses less digits than its factorization.

137520351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15280045 (or 15280042 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 137520351 is about 11726.9071370076. The cubic root of 137520351 is about 516.1655206328.

The spelling of 137520351 in words is "one hundred thirty-seven million, five hundred twenty thousand, three hundred fifty-one".