113553561 has 8 divisors (see below), whose sum is σ = 165168864. Its totient is φ = 68820320.

The previous prime is 113553529. The next prime is 113553563. The reversal of 113553561 is 165355311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113553561 - 2⁵ = 113553529 is a prime.

It is a super-2 number, since 2×113553561² = 25788822431561442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113553563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720476 + ... + 1720541.

It is an arithmetic number, because the mean of its divisors is an integer number (20646108).

Almost surely, 2^113553561 is an apocalyptic number.

113553561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113553561 is a deficient number, since it is larger than the sum of its proper divisors (51615303).

113553561 is a wasteful number, since it uses less digits than its factorization.

113553561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441031.

The product of its digits is 6750, while the sum is 30.

The square root of 113553561 is about 10656.1513221238. The cubic root of 113553561 is about 484.2469782566.

The spelling of 113553561 in words is "one hundred thirteen million, five hundred fifty-three thousand, five hundred sixty-one".