12251513 has 4 divisors (see below), whose sum is σ = 12345168. Its totient is φ = 12157860.

The previous prime is 12251501. The next prime is 12251549. The reversal of 12251513 is 31515221.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31515221 = 23 ⋅1370227.

It is a cyclic number.

It is not a de Polignac number, because 12251513 - 2²⁰ = 11202937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12253513) 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, 46631 + ... + 46892.

It is an arithmetic number, because the mean of its divisors is an integer number (3086292).

Almost surely, 2^12251513 is an apocalyptic number.

It is an amenable number.

12251513 is a deficient number, since it is larger than the sum of its proper divisors (93655).

12251513 is an equidigital number, since it uses as much as digits as its factorization.

12251513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93654.

The product of its digits is 300, while the sum is 20.

The square root of 12251513 is about 3500.2161361836. The cubic root of 12251513 is about 230.5313048110.

Adding to 12251513 its reverse (31515221), we get a palindrome (43766734).

The spelling of 12251513 in words is "twelve million, two hundred fifty-one thousand, five hundred thirteen".