12502279 has 4 divisors (see below), whose sum is σ = 12551184. Its totient is φ = 12453376.

The previous prime is 12502249. The next prime is 12502289. The reversal of 12502279 is 97220521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97220521 = 107 ⋅908603.

It is a cyclic number.

It is not a de Polignac number, because 12502279 - 2⁷ = 12502151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12502229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24067 + ... + 24580.

It is an arithmetic number, because the mean of its divisors is an integer number (3137796).

Almost surely, 2^12502279 is an apocalyptic number.

12502279 is a deficient number, since it is larger than the sum of its proper divisors (48905).

12502279 is an equidigital number, since it uses as much as digits as its factorization.

12502279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48904.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12502279 is about 3535.8561905145. The cubic root of 12502279 is about 232.0935450648.

The spelling of 12502279 in words is "twelve million, five hundred two thousand, two hundred seventy-nine".