802855513 has 2 divisors, whose sum is σ = 802855514. Its totient is φ = 802855512.

The previous prime is 802855511. The next prime is 802855541. The reversal of 802855513 is 315558208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539539984 + 263315529 = 23228^2 + 16227^2 .

It is a cyclic number.

It is not a de Polignac number, because 802855513 - 2¹ = 802855511 is a prime.

Together with 802855511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (802855511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401427756 + 401427757.

It is an arithmetic number, because the mean of its divisors is an integer number (401427757).

Almost surely, 2^802855513 is an apocalyptic number.

It is an amenable number.

802855513 is a deficient number, since it is larger than the sum of its proper divisors (1).

802855513 is an equidigital number, since it uses as much as digits as its factorization.

802855513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 802855513 is about 28334.7050981654. The cubic root of 802855513 is about 929.4209649511.

The spelling of 802855513 in words is "eight hundred two million, eight hundred fifty-five thousand, five hundred thirteen".