13013251 has 4 divisors (see below), whose sum is σ = 13028904. Its totient is φ = 12997600.

The previous prime is 13013243. The next prime is 13013261. The reversal of 13013251 is 15231031.

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 13013251 - 2³ = 13013243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13013261) 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, 6505 + ... + 8266.

It is an arithmetic number, because the mean of its divisors is an integer number (3257226).

Almost surely, 2^13013251 is an apocalyptic number.

13013251 is a deficient number, since it is larger than the sum of its proper divisors (15653).

13013251 is an equidigital number, since it uses as much as digits as its factorization.

13013251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15652.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 13013251 is about 3607.3883905119. The cubic root of 13013251 is about 235.2133327607.

Adding to 13013251 its reverse (15231031), we get a palindrome (28244282).

The spelling of 13013251 in words is "thirteen million, thirteen thousand, two hundred fifty-one".