15222887 has 2 divisors, whose sum is σ = 15222888. Its totient is φ = 15222886.

The previous prime is 15222839. The next prime is 15222901. The reversal of 15222887 is 78822251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15222887 - 2⁸ = 15222631 is a prime.

It is a super-2 number, since 2×15222887² = 463472577229538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15227887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7611443 + 7611444.

It is an arithmetic number, because the mean of its divisors is an integer number (7611444).

Almost surely, 2^15222887 is an apocalyptic number.

15222887 is a deficient number, since it is larger than the sum of its proper divisors (1).

15222887 is an equidigital number, since it uses as much as digits as its factorization.

15222887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 35.

The square root of 15222887 is about 3901.6518296742. The cubic root of 15222887 is about 247.8367324188.

The spelling of 15222887 in words is "fifteen million, two hundred twenty-two thousand, eight hundred eighty-seven".