113251555 has 4 divisors (see below), whose sum is σ = 135901872. Its totient is φ = 90601240.

The previous prime is 113251511. The next prime is 113251559. The reversal of 113251555 is 555152311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 113251555 - 2¹⁹ = 112727267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113251559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11325151 + ... + 11325160.

It is an arithmetic number, because the mean of its divisors is an integer number (33975468).

Almost surely, 2^113251555 is an apocalyptic number.

113251555 is a deficient number, since it is larger than the sum of its proper divisors (22650317).

113251555 is an equidigital number, since it uses as much as digits as its factorization.

113251555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22650316.

The product of its digits is 3750, while the sum is 28.

The square root of 113251555 is about 10641.9713869189. The cubic root of 113251555 is about 483.8172975122.

It can be divided in two parts, 11325 and 1555, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 113251555 in words is "one hundred thirteen million, two hundred fifty-one thousand, five hundred fifty-five".