113504551 has 4 divisors (see below), whose sum is σ = 113535000. Its totient is φ = 113474104.

The previous prime is 113504543. The next prime is 113504569. The reversal of 113504551 is 155405311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113504551 - 2³ = 113504543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113502551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8701 + ... + 17398.

It is an arithmetic number, because the mean of its divisors is an integer number (28383750).

Almost surely, 2^113504551 is an apocalyptic number.

113504551 is a deficient number, since it is larger than the sum of its proper divisors (30449).

113504551 is an equidigital number, since it uses as much as digits as its factorization.

113504551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30448.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 113504551 is about 10653.8514632033. The cubic root of 113504551 is about 484.1773008304.

Adding to 113504551 its reverse (155405311), we get a palindrome (268909862).

The spelling of 113504551 in words is "one hundred thirteen million, five hundred four thousand, five hundred fifty-one".