16255791 has 24 divisors (see below), whose sum is σ = 25041744. Its totient is φ = 10126080.

The previous prime is 16255787. The next prime is 16255793. The reversal of 16255791 is 19755261.

16255791 is a `hidden beast` number, since 16 + 2 + 557 + 91 = 666.

It is not a de Polignac number, because 16255791 - 2² = 16255787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16255793) 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 23 ways as a sum of consecutive naturals, for example, 27400 + ... + 27986.

It is an arithmetic number, because the mean of its divisors is an integer number (1043406).

Almost surely, 2^16255791 is an apocalyptic number.

16255791 is a deficient number, since it is larger than the sum of its proper divisors (8785953).

16255791 is a wasteful number, since it uses less digits than its factorization.

16255791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 788 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 16255791 is about 4031.8470953150. The cubic root of 16255791 is about 253.3199356180.

The spelling of 16255791 in words is "sixteen million, two hundred fifty-five thousand, seven hundred ninety-one".