113455581 has 8 divisors (see below), whose sum is σ = 151354944. Its totient is φ = 75596640.

The previous prime is 113455571. The next prime is 113455583. The reversal of 113455581 is 185554311.

It is a happy number.

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

It is not a de Polignac number, because 113455581 - 2¹⁰ = 113454557 is a prime.

It is a super-2 number, since 2×113455581² = 25744337720095122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113455583) 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, 2800 + ... + 15321.

It is an arithmetic number, because the mean of its divisors is an integer number (18919368).

Almost surely, 2^113455581 is an apocalyptic number.

It is an amenable number.

113455581 is a deficient number, since it is larger than the sum of its proper divisors (37899363).

113455581 is a wasteful number, since it uses less digits than its factorization.

113455581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20211.

The product of its digits is 12000, while the sum is 33.

The square root of 113455581 is about 10651.5529853632. The cubic root of 113455581 is about 484.1076602364.

The spelling of 113455581 in words is "one hundred thirteen million, four hundred fifty-five thousand, five hundred eighty-one".