113659551 has 8 divisors (see below), whose sum is σ = 168384560. Its totient is φ = 75773016.

The previous prime is 113659543. The next prime is 113659561. The reversal of 113659551 is 155956311.

113659551 is a `hidden beast` number, since 1 + 13 + 6 + 595 + 51 = 666.

It is not a de Polignac number, because 113659551 - 2³ = 113659543 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 (113659541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2104780 + ... + 2104833.

It is an arithmetic number, because the mean of its divisors is an integer number (21048070).

Almost surely, 2^113659551 is an apocalyptic number.

113659551 is a deficient number, since it is larger than the sum of its proper divisors (54725009).

113659551 is an equidigital number, since it uses as much as digits as its factorization.

113659551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209622 (or 4209616 counting only the distinct ones).

The product of its digits is 20250, while the sum is 36.

The square root of 113659551 is about 10661.1233460644. The cubic root of 113659551 is about 484.3975955106.

The spelling of 113659551 in words is "one hundred thirteen million, six hundred fifty-nine thousand, five hundred fifty-one".