13491261 has 12 divisors (see below), whose sum is σ = 22271392. Its totient is φ = 7709256.

The previous prime is 13491259. The next prime is 13491281. The reversal of 13491261 is 16219431.

It is not a de Polignac number, because 13491261 - 2¹ = 13491259 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13491211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107011 + ... + 107136.

Almost surely, 2^13491261 is an apocalyptic number.

It is an amenable number.

13491261 is a deficient number, since it is larger than the sum of its proper divisors (8780131).

13491261 is a wasteful number, since it uses less digits than its factorization.

13491261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214160 (or 214157 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 13491261 is about 3673.0451943857. The cubic root of 13491261 is about 238.0587678241.

The spelling of 13491261 in words is "thirteen million, four hundred ninety-one thousand, two hundred sixty-one".