113521415 has 32 divisors (see below), whose sum is σ = 160634880. Its totient is φ = 75398400.

The previous prime is 113521381. The next prime is 113521433. The reversal of 113521415 is 514125311.

It is not a de Polignac number, because 113521415 - 2¹⁰ = 113520391 is a prime.

It is a super-2 number, since 2×113521415² = 25774223327204450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342800 + ... + 343130.

It is an arithmetic number, because the mean of its divisors is an integer number (5019840).

Almost surely, 2^113521415 is an apocalyptic number.

113521415 is a deficient number, since it is larger than the sum of its proper divisors (47113465).

113521415 is a wasteful number, since it uses less digits than its factorization.

113521415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623.

The product of its digits is 600, while the sum is 23.

The square root of 113521415 is about 10654.6428846771. The cubic root of 113521415 is about 484.2012786109.

Adding to 113521415 its reverse (514125311), we get a palindrome (627646726).

The spelling of 113521415 in words is "one hundred thirteen million, five hundred twenty-one thousand, four hundred fifteen".