855256455 has 32 divisors (see below), whose sum is σ = 1555825920. Its totient is φ = 445525920.

The previous prime is 855256397. The next prime is 855256459. The reversal of 855256455 is 554652558.

855256455 is a `hidden beast` number, since 8 + 552 + 56 + 45 + 5 = 666.

It is not a de Polignac number, because 855256455 - 2¹³ = 855248263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 855256455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855256459) 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 in 31 ways as a sum of consecutive naturals, for example, 67861 + ... + 79470.

It is an arithmetic number, because the mean of its divisors is an integer number (48619560).

Almost surely, 2^855256455 is an apocalyptic number.

855256455 is a deficient number, since it is larger than the sum of its proper divisors (700569465).

855256455 is a wasteful number, since it uses less digits than its factorization.

855256455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147388 (or 147382 counting only the distinct ones).

The product of its digits is 1200000, while the sum is 45.

The square root of 855256455 is about 29244.7679936087. The cubic root of 855256455 is about 949.2168818649.

The spelling of 855256455 in words is "eight hundred fifty-five million, two hundred fifty-six thousand, four hundred fifty-five".