13012251 has 16 divisors (see below), whose sum is σ = 19880448. Its totient is φ = 7416000.

The previous prime is 13012247. The next prime is 13012261. The reversal of 13012251 is 15221031.

13012251 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13012251 - 2² = 13012247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13012251.

It is not an unprimeable number, because it can be changed into a prime (13012231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12106 + ... + 13136.

It is an arithmetic number, because the mean of its divisors is an integer number (1242528).

Almost surely, 2^13012251 is an apocalyptic number.

13012251 is a deficient number, since it is larger than the sum of its proper divisors (6868197).

13012251 is a wasteful number, since it uses less digits than its factorization.

13012251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 13012251 is about 3607.2497834223. The cubic root of 13012251 is about 235.2073076366.

Adding to 13012251 its reverse (15221031), we get a palindrome (28233282).

The spelling of 13012251 in words is "thirteen million, twelve thousand, two hundred fifty-one".