13315251 has 16 divisors (see below), whose sum is σ = 18285696. Its totient is φ = 8613696.

The previous prime is 13315249. The next prime is 13315259. The reversal of 13315251 is 15251331.

It is not a de Polignac number, because 13315251 - 2¹ = 13315249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13315259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29836 + ... + 30278.

It is an arithmetic number, because the mean of its divisors is an integer number (1142856).

Almost surely, 2^13315251 is an apocalyptic number.

13315251 is a deficient number, since it is larger than the sum of its proper divisors (4970445).

13315251 is a wasteful number, since it uses less digits than its factorization.

13315251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its digits is 450, while the sum is 21.

The square root of 13315251 is about 3649.0068511857. The cubic root of 13315251 is about 237.0189769205.

Adding to 13315251 its reverse (15251331), we get a palindrome (28566582).

The spelling of 13315251 in words is "thirteen million, three hundred fifteen thousand, two hundred fifty-one".