12795581 has 4 divisors (see below), whose sum is σ = 12802752. Its totient is φ = 12788412.

The previous prime is 12795557. The next prime is 12795617. The reversal of 12795581 is 18559721.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12795581 - 2¹⁴ = 12779197 is a prime.

It is a super-2 number, since 2×12795581² = 327453786255122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12795511) 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, 1436 + ... + 5258.

It is an arithmetic number, because the mean of its divisors is an integer number (3200688).

Almost surely, 2^12795581 is an apocalyptic number.

It is an amenable number.

12795581 is a deficient number, since it is larger than the sum of its proper divisors (7171).

12795581 is an equidigital number, since it uses as much as digits as its factorization.

12795581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7170.

The product of its digits is 25200, while the sum is 38.

The square root of 12795581 is about 3577.0911366640. The cubic root of 12795581 is about 233.8944967203.

The spelling of 12795581 in words is "twelve million, seven hundred ninety-five thousand, five hundred eighty-one".