855002801 has 2 divisors, whose sum is σ = 855002802. Its totient is φ = 855002800.

The previous prime is 855002783. The next prime is 855002833. The reversal of 855002801 is 108200558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 783160225 + 71842576 = 27985^2 + 8476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855002801 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (855002891) 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, 427501400 + 427501401.

It is an arithmetic number, because the mean of its divisors is an integer number (427501401).

Almost surely, 2^855002801 is an apocalyptic number.

It is an amenable number.

855002801 is a deficient number, since it is larger than the sum of its proper divisors (1).

855002801 is an equidigital number, since it uses as much as digits as its factorization.

855002801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 855002801 is about 29240.4309304771. The cubic root of 855002801 is about 949.1230322504.

The spelling of 855002801 in words is "eight hundred fifty-five million, two thousand, eight hundred one".