13061491 has 4 divisors (see below), whose sum is σ = 13829832. Its totient is φ = 12293152.

The previous prime is 13061471. The next prime is 13061527. The reversal of 13061491 is 19416031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13061491 - 2⁵ = 13061459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13061431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384145 + ... + 384178.

It is an arithmetic number, because the mean of its divisors is an integer number (3457458).

Almost surely, 2^13061491 is an apocalyptic number.

13061491 is a deficient number, since it is larger than the sum of its proper divisors (768341).

13061491 is an equidigital number, since it uses as much as digits as its factorization.

13061491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768340.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 13061491 is about 3614.0684830257. The cubic root of 13061491 is about 235.5036189027.

The spelling of 13061491 in words is "thirteen million, sixty-one thousand, four hundred ninety-one".