113220555 has 64 divisors (see below), whose sum is σ = 215144448. Its totient is φ = 49766400.

The previous prime is 113220539. The next prime is 113220571. The reversal of 113220555 is 555022311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (113220539) and next prime (113220571).

It is not a de Polignac number, because 113220555 - 2⁴ = 113220539 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 586539 + ... + 586731.

It is an arithmetic number, because the mean of its divisors is an integer number (3361632).

Almost surely, 2^113220555 is an apocalyptic number.

113220555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

113220555 is a deficient number, since it is larger than the sum of its proper divisors (101923893).

113220555 is a wasteful number, since it uses less digits than its factorization.

113220555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 113220555 is about 10640.5147901782. The cubic root of 113220555 is about 483.7731488765.

Adding to 113220555 its reverse (555022311), we get a palindrome (668242866).

The spelling of 113220555 in words is "one hundred thirteen million, two hundred twenty thousand, five hundred fifty-five".