12532279 has 2 divisors, whose sum is σ = 12532280. Its totient is φ = 12532278.

The previous prime is 12532271. The next prime is 12532297. The reversal of 12532279 is 97223521.

Together with next prime (12532297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12532279 - 2³ = 12532271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12532279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12532271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6266139 + 6266140.

It is an arithmetic number, because the mean of its divisors is an integer number (6266140).

Almost surely, 2^12532279 is an apocalyptic number.

12532279 is a deficient number, since it is larger than the sum of its proper divisors (1).

12532279 is an equidigital number, since it uses as much as digits as its factorization.

12532279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 12532279 is about 3540.0959026557. The cubic root of 12532279 is about 232.2790377667.

The spelling of 12532279 in words is "twelve million, five hundred thirty-two thousand, two hundred seventy-nine".