13261513 has 8 divisors (see below), whose sum is σ = 14073480. Its totient is φ = 12453120.

The previous prime is 13261499. The next prime is 13261529. The reversal of 13261513 is 31516231.

It is a happy number.

13261513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4717584 + 8543929 = 2172^2 + 2923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13261513 - 2⁵ = 13261481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13261543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13623 + ... + 14563.

It is an arithmetic number, because the mean of its divisors is an integer number (1759185).

Almost surely, 2^13261513 is an apocalyptic number.

It is an amenable number.

13261513 is a deficient number, since it is larger than the sum of its proper divisors (811967).

13261513 is an equidigital number, since it uses as much as digits as its factorization.

13261513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787.

The product of its digits is 540, while the sum is 22.

The square root of 13261513 is about 3641.6360334333. The cubic root of 13261513 is about 236.6996914394.

Adding to 13261513 its reverse (31516231), we get a palindrome (44777744).

The spelling of 13261513 in words is "thirteen million, two hundred sixty-one thousand, five hundred thirteen".