13551457 has 2 divisors, whose sum is σ = 13551458. Its totient is φ = 13551456.

The previous prime is 13551451. The next prime is 13551467. The reversal of 13551457 is 75415531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13242321 + 309136 = 3639^2 + 556^2 .

It is an emirp because it is prime and its reverse (75415531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13551457 - 2³ = 13551449 is a prime.

It is a Chen prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (13551451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775728 + 6775729.

It is an arithmetic number, because the mean of its divisors is an integer number (6775729).

Almost surely, 2^13551457 is an apocalyptic number.

It is an amenable number.

13551457 is a deficient number, since it is larger than the sum of its proper divisors (1).

13551457 is an equidigital number, since it uses as much as digits as its factorization.

13551457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10500, while the sum is 31.

The square root of 13551457 is about 3681.2303649731. The cubic root of 13551457 is about 238.4123034748.

Adding to 13551457 its reverse (75415531), we get a palindrome (88966988).

The spelling of 13551457 in words is "thirteen million, five hundred fifty-one thousand, four hundred fifty-seven".