113629561 has 2 divisors, whose sum is σ = 113629562. Its totient is φ = 113629560.

The previous prime is 113629517. The next prime is 113629631. The reversal of 113629561 is 165926311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79477225 + 34152336 = 8915^2 + 5844^2 .

It is a cyclic number.

It is not a de Polignac number, because 113629561 - 2¹¹ = 113627513 is a prime.

It is not a weakly prime, because it can be changed into another prime (113629501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56814780 + 56814781.

It is an arithmetic number, because the mean of its divisors is an integer number (56814781).

Almost surely, 2^113629561 is an apocalyptic number.

It is an amenable number.

113629561 is a deficient number, since it is larger than the sum of its proper divisors (1).

113629561 is an equidigital number, since it uses as much as digits as its factorization.

113629561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 34.

The square root of 113629561 is about 10659.7167410771. The cubic root of 113629561 is about 484.3549876768.

It can be divided in two parts, 1136295 and 61, that added together give a square (1136356 = 1066²).

The spelling of 113629561 in words is "one hundred thirteen million, six hundred twenty-nine thousand, five hundred sixty-one".