113639155 has 16 divisors (see below), whose sum is σ = 158791104. Its totient is φ = 76452480.

The previous prime is 113639147. The next prime is 113639161. The reversal of 113639155 is 551936311.

It is a happy number.

It is not a de Polignac number, because 113639155 - 2³ = 113639147 is a prime.

It is a super-2 number, since 2×113639155² = 25827715098228050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113639155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28776 + ... + 32485.

It is an arithmetic number, because the mean of its divisors is an integer number (9924444).

Almost surely, 2^113639155 is an apocalyptic number.

113639155 is a deficient number, since it is larger than the sum of its proper divisors (45151949).

113639155 is an equidigital number, since it uses as much as digits as its factorization.

113639155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61326.

The product of its digits is 12150, while the sum is 34.

The square root of 113639155 is about 10660.1667435364. The cubic root of 113639155 is about 484.3686190210.

The spelling of 113639155 in words is "one hundred thirteen million, six hundred thirty-nine thousand, one hundred fifty-five".