13253681 has 16 divisors (see below), whose sum is σ = 15925248. Its totient is φ = 10784400.

The previous prime is 13253677. The next prime is 13253687. The reversal of 13253681 is 18635231.

It is a cyclic number.

It is not a de Polignac number, because 13253681 - 2² = 13253677 is a prime.

It is a super-2 number, since 2×13253681² = 351320120099522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13253687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30536 + ... + 30966.

It is an arithmetic number, because the mean of its divisors is an integer number (995328).

Almost surely, 2^13253681 is an apocalyptic number.

It is an amenable number.

13253681 is a deficient number, since it is larger than the sum of its proper divisors (2671567).

13253681 is a wasteful number, since it uses less digits than its factorization.

13253681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its digits is 4320, while the sum is 29.

The square root of 13253681 is about 3640.5605337640. The cubic root of 13253681 is about 236.6530854690.

The spelling of 13253681 in words is "thirteen million, two hundred fifty-three thousand, six hundred eighty-one".