13628551 has 2 divisors, whose sum is σ = 13628552. Its totient is φ = 13628550.

The previous prime is 13628539. The next prime is 13628557. The reversal of 13628551 is 15582631.

It is a strong prime.

It is an emirp because it is prime and its reverse (15582631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13628551 - 2⁹ = 13628039 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 (13628557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6814275 + 6814276.

It is an arithmetic number, because the mean of its divisors is an integer number (6814276).

Almost surely, 2^13628551 is an apocalyptic number.

13628551 is a deficient number, since it is larger than the sum of its proper divisors (1).

13628551 is an equidigital number, since it uses as much as digits as its factorization.

13628551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The square root of 13628551 is about 3691.6867418566. The cubic root of 13628551 is about 238.8635566272.

The spelling of 13628551 in words is "thirteen million, six hundred twenty-eight thousand, five hundred fifty-one".