855256775 has 6 divisors (see below), whose sum is σ = 1060518432. Its totient is φ = 684205400.

The previous prime is 855256751. The next prime is 855256793. The reversal of 855256775 is 577652558.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-855256775 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17105111 + ... + 17105160.

It is an arithmetic number, because the mean of its divisors is an integer number (176753072).

Almost surely, 2^855256775 is an apocalyptic number.

855256775 is a deficient number, since it is larger than the sum of its proper divisors (205261657).

855256775 is a wasteful number, since it uses less digits than its factorization.

855256775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34210281 (or 34210276 counting only the distinct ones).

The product of its digits is 2940000, while the sum is 50.

The square root of 855256775 is about 29244.7734646723. The cubic root of 855256775 is about 949.2170002502.

The spelling of 855256775 in words is "eight hundred fifty-five million, two hundred fifty-six thousand, seven hundred seventy-five".