113520155 has 16 divisors (see below), whose sum is σ = 163879680. Its totient is φ = 73744992.

The previous prime is 113520151. The next prime is 113520161. The reversal of 113520155 is 551025311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 113520155 - 2² = 113520151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113520155.

It is not an unprimeable number, because it can be changed into a prime (113520151) 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 15 ways as a sum of consecutive naturals, for example, 84689 + ... + 86018.

It is an arithmetic number, because the mean of its divisors is an integer number (10242480).

Almost surely, 2^113520155 is an apocalyptic number.

113520155 is a deficient number, since it is larger than the sum of its proper divisors (50359525).

113520155 is a wasteful number, since it uses less digits than its factorization.

113520155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170738.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 113520155 is about 10654.5837553609. The cubic root of 113520155 is about 484.1994871843.

Adding to 113520155 its reverse (551025311), we get a palindrome (664545466).

The spelling of 113520155 in words is "one hundred thirteen million, five hundred twenty thousand, one hundred fifty-five".