113521554 has 16 divisors (see below), whose sum is σ = 252270240. Its totient is φ = 37840500.

The previous prime is 113521489. The next prime is 113521607. The reversal of 113521554 is 455125311.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1051072 + ... + 1051179.

It is an arithmetic number, because the mean of its divisors is an integer number (15766890).

Almost surely, 2^113521554 is an apocalyptic number.

113521554 is an abundant number, since it is smaller than the sum of its proper divisors (138748686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113521554 is a wasteful number, since it uses less digits than its factorization.

113521554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102262 (or 2102256 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 113521554 is about 10654.6494076530. The cubic root of 113521554 is about 484.2014762358.

Adding to 113521554 its reverse (455125311), we get a palindrome (568646865).

The spelling of 113521554 in words is "one hundred thirteen million, five hundred twenty-one thousand, five hundred fifty-four".