113572621 has 2 divisors, whose sum is σ = 113572622. Its totient is φ = 113572620.

The previous prime is 113572609. The next prime is 113572637. The reversal of 113572621 is 126275311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57547396 + 56025225 = 7586^2 + 7485^2 .

It is a cyclic number.

It is not a de Polignac number, because 113572621 - 2²⁵ = 80018189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113572621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113572651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56786310 + 56786311.

It is an arithmetic number, because the mean of its divisors is an integer number (56786311).

Almost surely, 2^113572621 is an apocalyptic number.

It is an amenable number.

113572621 is a deficient number, since it is larger than the sum of its proper divisors (1).

113572621 is an equidigital number, since it uses as much as digits as its factorization.

113572621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 113572621 is about 10657.0456037309. The cubic root of 113572621 is about 484.2740704088.

The spelling of 113572621 in words is "one hundred thirteen million, five hundred seventy-two thousand, six hundred twenty-one".