113653521 has 6 divisors (see below), whose sum is σ = 164166210. Its totient is φ = 75769008.

The previous prime is 113653513. The next prime is 113653559. The reversal of 113653521 is 125356311.

113653521 is a `hidden beast` number, since 1 + 1 + 3 + 653 + 5 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72437121 + 41216400 = 8511^2 + 6420^2 .

It is not a de Polignac number, because 113653521 - 2³ = 113653513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113653591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6314076 + ... + 6314093.

It is an arithmetic number, because the mean of its divisors is an integer number (27361035).

Almost surely, 2^113653521 is an apocalyptic number.

It is an amenable number.

113653521 is a deficient number, since it is larger than the sum of its proper divisors (50512689).

113653521 is a wasteful number, since it uses less digits than its factorization.

113653521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12628175 (or 12628172 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 113653521 is about 10660.8405390945. The cubic root of 113653521 is about 484.3890290824.

The spelling of 113653521 in words is "one hundred thirteen million, six hundred fifty-three thousand, five hundred twenty-one".