12951745 has 4 divisors (see below), whose sum is σ = 15542100. Its totient is φ = 10361392.

The previous prime is 12951677. The next prime is 12951751. The reversal of 12951745 is 54715921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6066369 + 6885376 = 2463^2 + 2624^2 .

It is a cyclic number.

It is not a de Polignac number, because 12951745 - 2²³ = 4563137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12951745.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1295170 + ... + 1295179.

It is an arithmetic number, because the mean of its divisors is an integer number (3885525).

Almost surely, 2^12951745 is an apocalyptic number.

It is an amenable number.

12951745 is a deficient number, since it is larger than the sum of its proper divisors (2590355).

12951745 is an equidigital number, since it uses as much as digits as its factorization.

12951745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590354.

The product of its digits is 12600, while the sum is 34.

The square root of 12951745 is about 3598.8532895910. The cubic root of 12951745 is about 234.8421756053.

The spelling of 12951745 in words is "twelve million, nine hundred fifty-one thousand, seven hundred forty-five".