113557657 has 2 divisors, whose sum is σ = 113557658. Its totient is φ = 113557656.

The previous prime is 113557643. The next prime is 113557667. The reversal of 113557657 is 756755311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94012416 + 19545241 = 9696^2 + 4421^2 .

It is a cyclic number.

It is not a de Polignac number, because 113557657 - 2¹⁵ = 113524889 is a prime.

It is not a weakly prime, because it can be changed into another prime (113557667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56778828 + 56778829.

It is an arithmetic number, because the mean of its divisors is an integer number (56778829).

Almost surely, 2^113557657 is an apocalyptic number.

It is an amenable number.

113557657 is a deficient number, since it is larger than the sum of its proper divisors (1).

113557657 is an equidigital number, since it uses as much as digits as its factorization.

113557657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110250, while the sum is 40.

The square root of 113557657 is about 10656.3435098536. The cubic root of 113557657 is about 484.2528006244.

The spelling of 113557657 in words is "one hundred thirteen million, five hundred fifty-seven thousand, six hundred fifty-seven".