13145261 has 4 divisors (see below), whose sum is σ = 13162752. Its totient is φ = 13127772.

The previous prime is 13145257. The next prime is 13145263. The reversal of 13145261 is 16254131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13145261 - 2² = 13145257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145263) 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 3 ways as a sum of consecutive naturals, for example, 7565 + ... + 9138.

It is an arithmetic number, because the mean of its divisors is an integer number (3290688).

Almost surely, 2^13145261 is an apocalyptic number.

It is an amenable number.

13145261 is a deficient number, since it is larger than the sum of its proper divisors (17491).

13145261 is an equidigital number, since it uses as much as digits as its factorization.

13145261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17490.

The product of its digits is 720, while the sum is 23.

The square root of 13145261 is about 3625.6393918866. The cubic root of 13145261 is about 236.0060146413.

Adding to 13145261 its reverse (16254131), we get a palindrome (29399392).

The spelling of 13145261 in words is "thirteen million, one hundred forty-five thousand, two hundred sixty-one".