151520913 has 6 divisors (see below), whose sum is σ = 218863554. Its totient is φ = 101013936.

The previous prime is 151520893. The next prime is 151520921. The reversal of 151520913 is 319025151.

151520913 is a `hidden beast` number, since 1 + 51 + 520 + 91 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 151216209 + 304704 = 12297^2 + 552^2 .

It is not a de Polignac number, because 151520913 - 2¹⁶ = 151455377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151520923) 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, 8417820 + ... + 8417837.

It is an arithmetic number, because the mean of its divisors is an integer number (36477259).

Almost surely, 2^151520913 is an apocalyptic number.

It is an amenable number.

151520913 is a deficient number, since it is larger than the sum of its proper divisors (67342641).

151520913 is a wasteful number, since it uses less digits than its factorization.

151520913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16835663 (or 16835660 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 151520913 is about 12309.3831283294. The cubic root of 151520913 is about 533.1190393854.

The spelling of 151520913 in words is "one hundred fifty-one million, five hundred twenty thousand, nine hundred thirteen".