13800581 has 2 divisors, whose sum is σ = 13800582. Its totient is φ = 13800580.

The previous prime is 13800557. The next prime is 13800629. The reversal of 13800581 is 18500831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13764100 + 36481 = 3710^2 + 191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13800581 is a prime.

It is a super-2 number, since 2×13800581² = 380912071875122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13800581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13800541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6900290 + 6900291.

It is an arithmetic number, because the mean of its divisors is an integer number (6900291).

Almost surely, 2^13800581 is an apocalyptic number.

It is an amenable number.

13800581 is a deficient number, since it is larger than the sum of its proper divisors (1).

13800581 is an equidigital number, since it uses as much as digits as its factorization.

13800581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 13800581 is about 3714.9133233496. The cubic root of 13800581 is about 239.8643967764.

The spelling of 13800581 in words is "thirteen million, eight hundred thousand, five hundred eighty-one".