14891551 has 2 divisors, whose sum is σ = 14891552. Its totient is φ = 14891550.

The previous prime is 14891533. The next prime is 14891561. The reversal of 14891551 is 15519841.

It is a strong prime.

It is an emirp because it is prime and its reverse (15519841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14891551 - 2⁵ = 14891519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14891521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7445775 + 7445776.

It is an arithmetic number, because the mean of its divisors is an integer number (7445776).

Almost surely, 2^14891551 is an apocalyptic number.

14891551 is a deficient number, since it is larger than the sum of its proper divisors (1).

14891551 is an equidigital number, since it uses as much as digits as its factorization.

14891551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 34.

The square root of 14891551 is about 3858.9572425721. The cubic root of 14891551 is about 246.0254176482.

The spelling of 14891551 in words is "fourteen million, eight hundred ninety-one thousand, five hundred fifty-one".