12494521 has 4 divisors (see below), whose sum is σ = 13455652. Its totient is φ = 11533392.

The previous prime is 12494513. The next prime is 12494539. The reversal of 12494521 is 12549421.

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 5546025 + 6948496 = 2355^2 + 2636^2 .

It is not a de Polignac number, because 12494521 - 2³ = 12494513 is a prime.

It is a super-2 number, since 2×12494521² = 312226110038882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12494521.

It is not an unprimeable number, because it can be changed into a prime (12494821) 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, 480546 + ... + 480571.

It is an arithmetic number, because the mean of its divisors is an integer number (3363913).

Almost surely, 2^12494521 is an apocalyptic number.

It is an amenable number.

12494521 is a deficient number, since it is larger than the sum of its proper divisors (961131).

12494521 is an equidigital number, since it uses as much as digits as its factorization.

12494521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961130.

The product of its digits is 2880, while the sum is 28.

The square root of 12494521 is about 3534.7589733955. The cubic root of 12494521 is about 232.0455283716.

The spelling of 12494521 in words is "twelve million, four hundred ninety-four thousand, five hundred twenty-one".