113701561 has 2 divisors, whose sum is σ = 113701562. Its totient is φ = 113701560.

The previous prime is 113701537. The next prime is 113701571. The reversal of 113701561 is 165107311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80281600 + 33419961 = 8960^2 + 5781^2 .

It is a cyclic number.

It is not a de Polignac number, because 113701561 - 2⁷ = 113701433 is a prime.

It is not a weakly prime, because it can be changed into another prime (113701571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56850780 + 56850781.

It is an arithmetic number, because the mean of its divisors is an integer number (56850781).

Almost surely, 2^113701561 is an apocalyptic number.

It is an amenable number.

113701561 is a deficient number, since it is larger than the sum of its proper divisors (1).

113701561 is an equidigital number, since it uses as much as digits as its factorization.

113701561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 113701561 is about 10663.0934066996. The cubic root of 113701561 is about 484.4572679745.

Adding to 113701561 its reverse (165107311), we get a palindrome (278808872).

The spelling of 113701561 in words is "one hundred thirteen million, seven hundred one thousand, five hundred sixty-one".