15172271 has 2 divisors, whose sum is σ = 15172272. Its totient is φ = 15172270.

The previous prime is 15172259. The next prime is 15172277. The reversal of 15172271 is 17227151.

It is a strong prime.

It is an emirp because it is prime and its reverse (17227151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15172271 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15172271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15172277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7586135 + 7586136.

It is an arithmetic number, because the mean of its divisors is an integer number (7586136).

Almost surely, 2^15172271 is an apocalyptic number.

15172271 is a deficient number, since it is larger than the sum of its proper divisors (1).

15172271 is an equidigital number, since it uses as much as digits as its factorization.

15172271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 980, while the sum is 26.

The square root of 15172271 is about 3895.1599453681. The cubic root of 15172271 is about 247.5617422401.

The spelling of 15172271 in words is "fifteen million, one hundred seventy-two thousand, two hundred seventy-one".