115331553 has 32 divisors (see below), whose sum is σ = 185829120. Its totient is φ = 70398720.

The previous prime is 115331543. The next prime is 115331569. The reversal of 115331553 is 355133511.

It is not a de Polignac number, because 115331553 - 2⁴ = 115331537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115331543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13588 + ... + 20378.

It is an arithmetic number, because the mean of its divisors is an integer number (5807160).

Almost surely, 2^115331553 is an apocalyptic number.

It is an amenable number.

115331553 is a deficient number, since it is larger than the sum of its proper divisors (70497567).

115331553 is a wasteful number, since it uses less digits than its factorization.

115331553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6854 (or 6848 counting only the distinct ones).

The product of its digits is 3375, while the sum is 27.

The square root of 115331553 is about 10739.2529069764. The cubic root of 115331553 is about 486.7613049100.

The spelling of 115331553 in words is "one hundred fifteen million, three hundred thirty-one thousand, five hundred fifty-three".