113415551 has 4 divisors (see below), whose sum is σ = 120087072. Its totient is φ = 106744032.

The previous prime is 113415509. The next prime is 113415569. The reversal of 113415551 is 155514311.

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 113415551 - 2⁶ = 113415487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113415551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113415581) 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, 3335735 + ... + 3335768.

It is an arithmetic number, because the mean of its divisors is an integer number (30021768).

Almost surely, 2^113415551 is an apocalyptic number.

113415551 is a deficient number, since it is larger than the sum of its proper divisors (6671521).

113415551 is an equidigital number, since it uses as much as digits as its factorization.

113415551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671520.

The product of its digits is 1500, while the sum is 26.

The square root of 113415551 is about 10649.6737508714. The cubic root of 113415551 is about 484.0507183947.

Adding to 113415551 its reverse (155514311), we get a palindrome (268929862).

The spelling of 113415551 in words is "one hundred thirteen million, four hundred fifteen thousand, five hundred fifty-one".