113401551 has 4 divisors (see below), whose sum is σ = 151202072. Its totient is φ = 75601032.

The previous prime is 113401499. The next prime is 113401573. The reversal of 113401551 is 155104311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 113401551 - 2⁷ = 113401423 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 (113401451) 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, 18900256 + ... + 18900261.

It is an arithmetic number, because the mean of its divisors is an integer number (37800518).

Almost surely, 2^113401551 is an apocalyptic number.

113401551 is a deficient number, since it is larger than the sum of its proper divisors (37800521).

113401551 is an equidigital number, since it uses as much as digits as its factorization.

113401551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37800520.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 113401551 is about 10649.0164334553. The cubic root of 113401551 is about 484.0308005238.

Adding to 113401551 its reverse (155104311), we get a palindrome (268505862).

The spelling of 113401551 in words is "one hundred thirteen million, four hundred one thousand, five hundred fifty-one".