15256855 has 8 divisors (see below), whose sum is σ = 18432000. Its totient is φ = 12122976.

The previous prime is 15256853. The next prime is 15256859. The reversal of 15256855 is 55865251.

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 15256855 - 2¹ = 15256853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15256853) 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 in 7 ways as a sum of consecutive naturals, for example, 9495 + ... + 10984.

It is an arithmetic number, because the mean of its divisors is an integer number (2304000).

Almost surely, 2^15256855 is an apocalyptic number.

15256855 is a deficient number, since it is larger than the sum of its proper divisors (3175145).

15256855 is a wasteful number, since it uses less digits than its factorization.

15256855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20633.

The product of its digits is 60000, while the sum is 37.

The square root of 15256855 is about 3906.0024321549. The cubic root of 15256855 is about 248.0209345405.

The spelling of 15256855 in words is "fifteen million, two hundred fifty-six thousand, eight hundred fifty-five".