15222663 has 12 divisors (see below), whose sum is σ = 22038120. Its totient is φ = 10125456.

The previous prime is 15222659. The next prime is 15222673. The reversal of 15222663 is 36622251.

15222663 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15222663 - 2² = 15222659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15222673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2920 + ... + 6242.

It is an arithmetic number, because the mean of its divisors is an integer number (1836510).

Almost surely, 2^15222663 is an apocalyptic number.

15222663 is a deficient number, since it is larger than the sum of its proper divisors (6815457).

15222663 is a wasteful number, since it uses less digits than its factorization.

15222663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838 (or 3835 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 15222663 is about 3901.6231237781. The cubic root of 15222663 is about 247.8355167996.

The spelling of 15222663 in words is "fifteen million, two hundred twenty-two thousand, six hundred sixty-three".