15799655 has 4 divisors (see below), whose sum is σ = 18959592. Its totient is φ = 12639720.

The previous prime is 15799639. The next prime is 15799657. The reversal of 15799655 is 55699751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55699751 = 1039 ⋅53609.

It is not a de Polignac number, because 15799655 - 2⁴ = 15799639 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 (15799657) 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 3 ways as a sum of consecutive naturals, for example, 1579961 + ... + 1579970.

It is an arithmetic number, because the mean of its divisors is an integer number (4739898).

Almost surely, 2^15799655 is an apocalyptic number.

15799655 is a deficient number, since it is larger than the sum of its proper divisors (3159937).

15799655 is an equidigital number, since it uses as much as digits as its factorization.

15799655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159936.

The product of its digits is 425250, while the sum is 47.

The square root of 15799655 is about 3974.8779855487. The cubic root of 15799655 is about 250.9280440077.

The spelling of 15799655 in words is "fifteen million, seven hundred ninety-nine thousand, six hundred fifty-five".