13206553 has 2 divisors, whose sum is σ = 13206554. Its totient is φ = 13206552.

The previous prime is 13206541. The next prime is 13206563. The reversal of 13206553 is 35560231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13191424 + 15129 = 3632^2 + 123^2 .

It is a cyclic number.

It is not a de Polignac number, because 13206553 - 2⁹ = 13206041 is a prime.

It is not a weakly prime, because it can be changed into another prime (13206563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6603276 + 6603277.

It is an arithmetic number, because the mean of its divisors is an integer number (6603277).

Almost surely, 2^13206553 is an apocalyptic number.

It is an amenable number.

13206553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13206553 is an equidigital number, since it uses as much as digits as its factorization.

13206553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 13206553 is about 3634.0821399633. The cubic root of 13206553 is about 236.3722519856.

Adding to 13206553 its reverse (35560231), we get a palindrome (48766784).

The spelling of 13206553 in words is "thirteen million, two hundred six thousand, five hundred fifty-three".