15222056 has 8 divisors (see below), whose sum is σ = 28541370. Its totient is φ = 7611024.

The previous prime is 15222049. The next prime is 15222079. The reversal of 15222056 is 65022251.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 3865156 = 3370^2 + 1966^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951371 + ... + 951386.

Almost surely, 2^15222056 is an apocalyptic number.

It is an amenable number.

15222056 is a deficient number, since it is larger than the sum of its proper divisors (13319314).

15222056 is a wasteful number, since it uses less digits than its factorization.

15222056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902763 (or 1902759 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 15222056 is about 3901.5453348641. The cubic root of 15222056 is about 247.8322226288.

The spelling of 15222056 in words is "fifteen million, two hundred twenty-two thousand, fifty-six".