13549013 has 2 divisors, whose sum is σ = 13549014. Its totient is φ = 13549012.

The previous prime is 13549009. The next prime is 13549021. The reversal of 13549013 is 31094531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10387729 + 3161284 = 3223^2 + 1778^2 .

It is a cyclic number.

It is not a de Polignac number, because 13549013 - 2² = 13549009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13549073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6774506 + 6774507.

It is an arithmetic number, because the mean of its divisors is an integer number (6774507).

Almost surely, 2^13549013 is an apocalyptic number.

It is an amenable number.

13549013 is a deficient number, since it is larger than the sum of its proper divisors (1).

13549013 is an equidigital number, since it uses as much as digits as its factorization.

13549013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 13549013 is about 3680.8983957724. The cubic root of 13549013 is about 238.3979700910.

The spelling of 13549013 in words is "thirteen million, five hundred forty-nine thousand, thirteen".