15222379 has 2 divisors, whose sum is σ = 15222380. Its totient is φ = 15222378.

The previous prime is 15222377. The next prime is 15222391. The reversal of 15222379 is 97322251.

15222379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15222379 - 2¹ = 15222377 is a prime.

Together with 15222377, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15222379.

It is not a weakly prime, because it can be changed into another prime (15222371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7611189 + 7611190.

It is an arithmetic number, because the mean of its divisors is an integer number (7611190).

Almost surely, 2^15222379 is an apocalyptic number.

15222379 is a deficient number, since it is larger than the sum of its proper divisors (1).

15222379 is an equidigital number, since it uses as much as digits as its factorization.

15222379 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 15222379 is about 3901.5867284991. The cubic root of 15222379 is about 247.8339755510.

The spelling of 15222379 in words is "fifteen million, two hundred twenty-two thousand, three hundred seventy-nine".