113120553 has 16 divisors (see below), whose sum is σ = 185634176. Its totient is φ = 59667840.

The previous prime is 113120543. The next prime is 113120591. The reversal of 113120553 is 355021311.

It is not a de Polignac number, because 113120553 - 2⁵ = 113120521 is a prime.

It is a super-2 number, since 2×113120553² = 25592519022051618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (113120543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206908 + ... + 207453.

It is an arithmetic number, because the mean of its divisors is an integer number (11602136).

Almost surely, 2^113120553 is an apocalyptic number.

113120553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

113120553 is a deficient number, since it is larger than the sum of its proper divisors (72513623).

113120553 is a wasteful number, since it uses less digits than its factorization.

113120553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414384.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 113120553 is about 10635.8146373468. The cubic root of 113120553 is about 483.6306761227.

Adding to 113120553 its reverse (355021311), we get a palindrome (468141864).

The spelling of 113120553 in words is "one hundred thirteen million, one hundred twenty thousand, five hundred fifty-three".