15591271 has 2 divisors, whose sum is σ = 15591272. Its totient is φ = 15591270.

The previous prime is 15591253. The next prime is 15591293. The reversal of 15591271 is 17219551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15591271 - 2⁷ = 15591143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15591221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7795635 + 7795636.

It is an arithmetic number, because the mean of its divisors is an integer number (7795636).

Almost surely, 2^15591271 is an apocalyptic number.

15591271 is a deficient number, since it is larger than the sum of its proper divisors (1).

15591271 is an equidigital number, since it uses as much as digits as its factorization.

15591271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150, while the sum is 31.

The square root of 15591271 is about 3948.5783517616. The cubic root of 15591271 is about 249.8199824058.

The spelling of 15591271 in words is "fifteen million, five hundred ninety-one thousand, two hundred seventy-one".