15000056 has 8 divisors (see below), whose sum is σ = 28125120. Its totient is φ = 7500024.

The previous prime is 15000053. The next prime is 15000067. The reversal of 15000056 is 65000051.

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

It is a junction number, because it is equal to n+sod(n) for n = 14999998 and 15000043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15000053) 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, 937496 + ... + 937511.

It is an arithmetic number, because the mean of its divisors is an integer number (3515640).

Almost surely, 2^15000056 is an apocalyptic number.

It is an amenable number.

15000056 is a deficient number, since it is larger than the sum of its proper divisors (13125064).

15000056 is a wasteful number, since it uses less digits than its factorization.

15000056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875013 (or 1875009 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 15000056 is about 3872.9905757696. The cubic root of 15000056 is about 246.6215143391.

The spelling of 15000056 in words is "fifteen million, fifty-six", and thus it is an aban number and an uban number.