15998255 has 24 divisors (see below), whose sum is σ = 24054912. Its totient is φ = 10124352.

The previous prime is 15998251. The next prime is 15998267. The reversal of 15998255 is 55289951.

It is not a de Polignac number, because 15998255 - 2² = 15998251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15998251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 674 + ... + 5696.

It is an arithmetic number, because the mean of its divisors is an integer number (1002288).

Almost surely, 2^15998255 is an apocalyptic number.

15998255 is a deficient number, since it is larger than the sum of its proper divisors (8056657).

15998255 is a wasteful number, since it uses less digits than its factorization.

15998255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055 (or 5048 counting only the distinct ones).

The product of its digits is 162000, while the sum is 44.

The square root of 15998255 is about 3999.7818690524. The cubic root of 15998255 is about 251.9750489700.

The spelling of 15998255 in words is "fifteen million, nine hundred ninety-eight thousand, two hundred fifty-five".