15122855 has 8 divisors (see below), whose sum is σ = 19797264. Its totient is φ = 10998400.

The previous prime is 15122851. The next prime is 15122857. The reversal of 15122855 is 55822151.

15122855 = T₂₄₅₇ + T₂₄₅₈ + ... + T₂₄₆₁.

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

It is not a de Polignac number, because 15122855 - 2² = 15122851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15122851) 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, 137426 + ... + 137535.

It is an arithmetic number, because the mean of its divisors is an integer number (2474658).

Almost surely, 2^15122855 is an apocalyptic number.

15122855 is a deficient number, since it is larger than the sum of its proper divisors (4674409).

15122855 is a wasteful number, since it uses less digits than its factorization.

15122855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274977.

The product of its digits is 4000, while the sum is 29.

The square root of 15122855 is about 3888.8115151033. The cubic root of 15122855 is about 247.2926808576.

The spelling of 15122855 in words is "fifteen million, one hundred twenty-two thousand, eight hundred fifty-five".