13550447 has 2 divisors, whose sum is σ = 13550448. Its totient is φ = 13550446.

The previous prime is 13550443. The next prime is 13550483. The reversal of 13550447 is 74405531.

It is a weak prime.

It is an emirp because it is prime and its reverse (74405531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13550447 - 2² = 13550443 is a prime.

It is a super-2 number, since 2×13550447² = 367229227799618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13550443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775223 + 6775224.

It is an arithmetic number, because the mean of its divisors is an integer number (6775224).

Almost surely, 2^13550447 is an apocalyptic number.

13550447 is a deficient number, since it is larger than the sum of its proper divisors (1).

13550447 is an equidigital number, since it uses as much as digits as its factorization.

13550447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 13550447 is about 3681.0931800214. The cubic root of 13550447 is about 238.4063803132.

Adding to 13550447 its reverse (74405531), we get a palindrome (87955978).

The spelling of 13550447 in words is "thirteen million, five hundred fifty thousand, four hundred forty-seven".