15791227 has 2 divisors, whose sum is σ = 15791228. Its totient is φ = 15791226.

The previous prime is 15791221. The next prime is 15791257. The reversal of 15791227 is 72219751.

It is a weak prime.

It is an emirp because it is prime and its reverse (72219751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15791227 - 2⁷ = 15791099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15791192 and 15791201.

It is not a weakly prime, because it can be changed into another prime (15791221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7895613 + 7895614.

It is an arithmetic number, because the mean of its divisors is an integer number (7895614).

Almost surely, 2^15791227 is an apocalyptic number.

15791227 is a deficient number, since it is larger than the sum of its proper divisors (1).

15791227 is an equidigital number, since it uses as much as digits as its factorization.

15791227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 34.

The square root of 15791227 is about 3973.8176858029. The cubic root of 15791227 is about 250.8834186092.

It can be divided in two parts, 157912 and 27, that multiplied together give a palindrome (4263624).

The spelling of 15791227 in words is "fifteen million, seven hundred ninety-one thousand, two hundred twenty-seven".