113553971 has 2 divisors, whose sum is σ = 113553972. Its totient is φ = 113553970.

The previous prime is 113553953. The next prime is 113553983. The reversal of 113553971 is 179355311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113553971 - 2²⁶ = 46445107 is a prime.

It is not a weakly prime, because it can be changed into another prime (113553901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56776985 + 56776986.

It is an arithmetic number, because the mean of its divisors is an integer number (56776986).

Almost surely, 2^113553971 is an apocalyptic number.

113553971 is a deficient number, since it is larger than the sum of its proper divisors (1).

113553971 is an equidigital number, since it uses as much as digits as its factorization.

113553971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14175, while the sum is 35.

The square root of 113553971 is about 10656.1705598212. The cubic root of 113553971 is about 484.2475610683.

The spelling of 113553971 in words is "one hundred thirteen million, five hundred fifty-three thousand, nine hundred seventy-one".