113216551 has 8 divisors (see below), whose sum is σ = 133852320. Its totient is φ = 93696288.

The previous prime is 113216527. The next prime is 113216569. The reversal of 113216551 is 155612311.

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 113216551 - 2⁷ = 113216423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113216501) 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, 278656 + ... + 279061.

It is an arithmetic number, because the mean of its divisors is an integer number (16731540).

Almost surely, 2^113216551 is an apocalyptic number.

113216551 is a deficient number, since it is larger than the sum of its proper divisors (20635769).

113216551 is an equidigital number, since it uses as much as digits as its factorization.

113216551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557753.

The product of its digits is 900, while the sum is 25.

The square root of 113216551 is about 10640.3266397230. The cubic root of 113216551 is about 483.7674459942.

Adding to 113216551 its reverse (155612311), we get a palindrome (268828862).

The spelling of 113216551 in words is "one hundred thirteen million, two hundred sixteen thousand, five hundred fifty-one".