113499551 has 4 divisors (see below), whose sum is σ = 123817704. Its totient is φ = 103181400.

The previous prime is 113499523. The next prime is 113499557. The reversal of 113499551 is 155994311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155994311 = 11 ⋅14181301.

It is a cyclic number.

It is not a de Polignac number, because 113499551 - 2¹⁰ = 113498527 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 (113499557) 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, 5159060 + ... + 5159081.

It is an arithmetic number, because the mean of its divisors is an integer number (30954426).

Almost surely, 2^113499551 is an apocalyptic number.

113499551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113499551 is a deficient number, since it is larger than the sum of its proper divisors (10318153).

113499551 is a wasteful number, since it uses less digits than its factorization.

113499551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10318152.

The product of its digits is 24300, while the sum is 38.

The square root of 113499551 is about 10653.6168036963. The cubic root of 113499551 is about 484.1701912122.

The spelling of 113499551 in words is "one hundred thirteen million, four hundred ninety-nine thousand, five hundred fifty-one".