855359801 has 2 divisors, whose sum is σ = 855359802. Its totient is φ = 855359800.

The previous prime is 855359789. The next prime is 855359833. The reversal of 855359801 is 108953558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 460145401 + 395214400 = 21451^2 + 19880^2 .

It is a cyclic number.

It is not a de Polignac number, because 855359801 - 2¹⁴ = 855343417 is a prime.

It is a super-3 number, since 3×855359801³ (a number of 28 digits) contains 333 as substring.

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 (855359101) 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, 427679900 + 427679901.

It is an arithmetic number, because the mean of its divisors is an integer number (427679901).

Almost surely, 2^855359801 is an apocalyptic number.

It is an amenable number.

855359801 is a deficient number, since it is larger than the sum of its proper divisors (1).

855359801 is an equidigital number, since it uses as much as digits as its factorization.

855359801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 44.

The square root of 855359801 is about 29246.5348545772. The cubic root of 855359801 is about 949.2551136009.

The spelling of 855359801 in words is "eight hundred fifty-five million, three hundred fifty-nine thousand, eight hundred one".