15122056 has 8 divisors (see below), whose sum is σ = 28353870. Its totient is φ = 7561024.

The previous prime is 15122047. The next prime is 15122057. The reversal of 15122056 is 65022151.

It can be written as a sum of positive squares in only one way, i.e., 14699556 + 422500 = 3834^2 + 650^2 .

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

It is not an unprimeable number, because it can be changed into a prime (15122057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945121 + ... + 945136.

Almost surely, 2^15122056 is an apocalyptic number.

It is an amenable number.

15122056 is a deficient number, since it is larger than the sum of its proper divisors (13231814).

15122056 is a wasteful number, since it uses less digits than its factorization.

15122056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890263 (or 1890259 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 15122056 is about 3888.7087831310. The cubic root of 15122056 is about 247.2883256321.

The spelling of 15122056 in words is "fifteen million, one hundred twenty-two thousand, fifty-six".