13545247 has 2 divisors, whose sum is σ = 13545248. Its totient is φ = 13545246.

The previous prime is 13545239. The next prime is 13545251. The reversal of 13545247 is 74254531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13545247 - 2³ = 13545239 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 (13545227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6772623 + 6772624.

It is an arithmetic number, because the mean of its divisors is an integer number (6772624).

Almost surely, 2^13545247 is an apocalyptic number.

13545247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13545247 is an equidigital number, since it uses as much as digits as its factorization.

13545247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 13545247 is about 3680.3868003241. The cubic root of 13545247 is about 238.3758801683.

Adding to 13545247 its reverse (74254531), we get a palindrome (87799778).

It can be divided in two parts, 1354524 and 7, that added together give a palindrome (1354531).

The spelling of 13545247 in words is "thirteen million, five hundred forty-five thousand, two hundred forty-seven".