13602581 has 2 divisors, whose sum is σ = 13602582. Its totient is φ = 13602580.

The previous prime is 13602571. The next prime is 13602587. The reversal of 13602581 is 18520631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7890481 + 5712100 = 2809^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 13602581 - 2⁶ = 13602517 is a prime.

It is a super-2 number, since 2×13602581² = 370060419723122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13602581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13602587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6801290 + 6801291.

It is an arithmetic number, because the mean of its divisors is an integer number (6801291).

Almost surely, 2^13602581 is an apocalyptic number.

It is an amenable number.

13602581 is a deficient number, since it is larger than the sum of its proper divisors (1).

13602581 is an equidigital number, since it uses as much as digits as its factorization.

13602581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 13602581 is about 3688.1677022608. The cubic root of 13602581 is about 238.7117373329.

The spelling of 13602581 in words is "thirteen million, six hundred two thousand, five hundred eighty-one".