113819551 has 2 divisors, whose sum is σ = 113819552. Its totient is φ = 113819550.

The previous prime is 113819543. The next prime is 113819561. The reversal of 113819551 is 155918311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113819551 - 2³ = 113819543 is a prime.

It is equal to p_6509185 and since 113819551 and 6509185 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113819521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56909775 + 56909776.

It is an arithmetic number, because the mean of its divisors is an integer number (56909776).

Almost surely, 2^113819551 is an apocalyptic number.

113819551 is a deficient number, since it is larger than the sum of its proper divisors (1).

113819551 is an equidigital number, since it uses as much as digits as its factorization.

113819551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 34.

The square root of 113819551 is about 10668.6246067616. The cubic root of 113819551 is about 484.6247864958.

The spelling of 113819551 in words is "one hundred thirteen million, eight hundred nineteen thousand, five hundred fifty-one".