15028561 has 8 divisors (see below), whose sum is σ = 16105824. Its totient is φ = 13972800.

The previous prime is 15028529. The next prime is 15028597. The reversal of 15028561 is 16582051.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15028561 - 2⁵ = 15028529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15020561) by changing a digit.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3915 + ... + 6736.

It is an arithmetic number, because the mean of its divisors is an integer number (2013228).

Almost surely, 2^15028561 is an apocalyptic number.

It is an amenable number.

15028561 is a deficient number, since it is larger than the sum of its proper divisors (1077263).

15028561 is a wasteful number, since it uses less digits than its factorization.

15028561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10751.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 15028561 is about 3876.6688019484. The cubic root of 15028561 is about 246.7776359317. Note that the first 3 decimals are identical.

The spelling of 15028561 in words is "fifteen million, twenty-eight thousand, five hundred sixty-one".