855880801 has 4 divisors (see below), whose sum is σ = 856006704. Its totient is φ = 855754900.

The previous prime is 855880769. The next prime is 855880819. The reversal of 855880801 is 108088558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 108088558 = 2 ⋅54044279.

It is a cyclic number.

It is not a de Polignac number, because 855880801 - 2⁵ = 855880769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855880841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52135 + ... + 66556.

It is an arithmetic number, because the mean of its divisors is an integer number (214001676).

Almost surely, 2^855880801 is an apocalyptic number.

It is an amenable number.

855880801 is a deficient number, since it is larger than the sum of its proper divisors (125903).

855880801 is a wasteful number, since it uses less digits than its factorization.

855880801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125902.

The product of its (nonzero) digits is 102400, while the sum is 43.

The square root of 855880801 is about 29255.4405367617. The cubic root of 855880801 is about 949.4478050410.

The spelling of 855880801 in words is "eight hundred fifty-five million, eight hundred eighty thousand, eight hundred one".