15799243 has 4 divisors (see below), whose sum is σ = 16308928. Its totient is φ = 15289560.

The previous prime is 15799219. The next prime is 15799271. The reversal of 15799243 is 34299751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34299751 = 61 ⋅562291.

It is a cyclic number.

It is not a de Polignac number, because 15799243 - 2¹⁷ = 15668171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15799196 and 15799205.

It is not an unprimeable number, because it can be changed into a prime (15799213) 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, 254796 + ... + 254857.

It is an arithmetic number, because the mean of its divisors is an integer number (4077232).

Almost surely, 2^15799243 is an apocalyptic number.

15799243 is a deficient number, since it is larger than the sum of its proper divisors (509685).

15799243 is an equidigital number, since it uses as much as digits as its factorization.

15799243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509684.

The product of its digits is 68040, while the sum is 40.

The square root of 15799243 is about 3974.8261597207. The cubic root of 15799243 is about 250.9258628788.

The spelling of 15799243 in words is "fifteen million, seven hundred ninety-nine thousand, two hundred forty-three".