113517557 has 2 divisors, whose sum is σ = 113517558. Its totient is φ = 113517556.

The previous prime is 113517491. The next prime is 113517559. The reversal of 113517557 is 755715311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112381201 + 1136356 = 10601^2 + 1066^2 .

It is a cyclic number.

It is not a de Polignac number, because 113517557 - 2¹⁴ = 113501173 is a prime.

Together with 113517559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113517559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56758778 + 56758779.

It is an arithmetic number, because the mean of its divisors is an integer number (56758779).

Almost surely, 2^113517557 is an apocalyptic number.

It is an amenable number.

113517557 is a deficient number, since it is larger than the sum of its proper divisors (1).

113517557 is an equidigital number, since it uses as much as digits as its factorization.

113517557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18375, while the sum is 35.

The square root of 113517557 is about 10654.4618353064. The cubic root of 113517557 is about 484.1957933913.

The spelling of 113517557 in words is "one hundred thirteen million, five hundred seventeen thousand, five hundred fifty-seven".