113663551 has 2 divisors, whose sum is σ = 113663552. Its totient is φ = 113663550.

The previous prime is 113663503. The next prime is 113663569. The reversal of 113663551 is 155366311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113663551 - 2¹⁹ = 113139263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113663051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56831775 + 56831776.

It is an arithmetic number, because the mean of its divisors is an integer number (56831776).

Almost surely, 2^113663551 is an apocalyptic number.

113663551 is a deficient number, since it is larger than the sum of its proper divisors (1).

113663551 is an equidigital number, since it uses as much as digits as its factorization.

113663551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 31.

The square root of 113663551 is about 10661.3109419058. The cubic root of 113663551 is about 484.4032778829.

The spelling of 113663551 in words is "one hundred thirteen million, six hundred sixty-three thousand, five hundred fifty-one".