13808551 has 2 divisors, whose sum is σ = 13808552. Its totient is φ = 13808550.

The previous prime is 13808549. The next prime is 13808593. The reversal of 13808551 is 15580831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13808551 - 2¹ = 13808549 is a prime.

Together with 13808549, 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 (13808251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6904275 + 6904276.

It is an arithmetic number, because the mean of its divisors is an integer number (6904276).

Almost surely, 2^13808551 is an apocalyptic number.

13808551 is a deficient number, since it is larger than the sum of its proper divisors (1).

13808551 is an equidigital number, since it uses as much as digits as its factorization.

13808551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 13808551 is about 3715.9858718784. The cubic root of 13808551 is about 239.9105627397.

The spelling of 13808551 in words is "thirteen million, eight hundred eight thousand, five hundred fifty-one".