813360551 has 2 divisors, whose sum is σ = 813360552. Its totient is φ = 813360550.

The previous prime is 813360517. The next prime is 813360577. The reversal of 813360551 is 155063318.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 813360551 - 2⁶ = 813360487 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 (813360511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406680275 + 406680276.

It is an arithmetic number, because the mean of its divisors is an integer number (406680276).

Almost surely, 2^813360551 is an apocalyptic number.

813360551 is a deficient number, since it is larger than the sum of its proper divisors (1).

813360551 is an equidigital number, since it uses as much as digits as its factorization.

813360551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 813360551 is about 28519.4766957600. The cubic root of 813360551 is about 933.4571105257.

The spelling of 813360551 in words is "eight hundred thirteen million, three hundred sixty thousand, five hundred fifty-one".