113531553 has 24 divisors (see below), whose sum is σ = 167596416. Its totient is φ = 74037600.

The previous prime is 113531533. The next prime is 113531557. The reversal of 113531553 is 355135311.

It is not a de Polignac number, because 113531553 - 2¹² = 113527457 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (113531557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124168 + ... + 125078.

It is an arithmetic number, because the mean of its divisors is an integer number (6983184).

Almost surely, 2^113531553 is an apocalyptic number.

It is an amenable number.

113531553 is a deficient number, since it is larger than the sum of its proper divisors (54064863).

113531553 is a wasteful number, since it uses less digits than its factorization.

113531553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205 (or 1202 counting only the distinct ones).

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

The square root of 113531553 is about 10655.1186290909. The cubic root of 113531553 is about 484.2156920043.

Adding to 113531553 its reverse (355135311), we get a palindrome (468666864).

The spelling of 113531553 in words is "one hundred thirteen million, five hundred thirty-one thousand, five hundred fifty-three".