13499261 has 2 divisors, whose sum is σ = 13499262. Its totient is φ = 13499260.

The previous prime is 13499257. The next prime is 13499267. The reversal of 13499261 is 16299431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12460900 + 1038361 = 3530^2 + 1019^2 .

It is an emirp because it is prime and its reverse (16299431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13499261 - 2² = 13499257 is a prime.

It is a super-2 number, since 2×13499261² = 364460095092242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13499267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6749630 + 6749631.

It is an arithmetic number, because the mean of its divisors is an integer number (6749631).

Almost surely, 2^13499261 is an apocalyptic number.

It is an amenable number.

13499261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13499261 is an equidigital number, since it uses as much as digits as its factorization.

13499261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 13499261 is about 3674.1340476363. The cubic root of 13499261 is about 238.1058129405.

The spelling of 13499261 in words is "thirteen million, four hundred ninety-nine thousand, two hundred sixty-one".