13271551 has 2 divisors, whose sum is σ = 13271552. Its totient is φ = 13271550.

The previous prime is 13271549. The next prime is 13271593. The reversal of 13271551 is 15517231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13271551 - 2¹ = 13271549 is a prime.

It is a super-2 number, since 2×13271551² = 352268131891202, which contains 22 as substring.

Together with 13271549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13271521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6635775 + 6635776.

It is an arithmetic number, because the mean of its divisors is an integer number (6635776).

Almost surely, 2^13271551 is an apocalyptic number.

13271551 is a deficient number, since it is larger than the sum of its proper divisors (1).

13271551 is an equidigital number, since it uses as much as digits as its factorization.

13271551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 25.

The square root of 13271551 is about 3643.0139994241. The cubic root of 13271551 is about 236.7593978563.

Adding to 13271551 its reverse (15517231), we get a palindrome (28788782).

The spelling of 13271551 in words is "thirteen million, two hundred seventy-one thousand, five hundred fifty-one".