855506045 has 32 divisors (see below), whose sum is σ = 1165010688. Its totient is φ = 599436288.

The previous prime is 855506021. The next prime is 855506063. The reversal of 855506045 is 540605558.

It is a cyclic number.

It is not a de Polignac number, because 855506045 - 2⁸ = 855505789 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 31 ways as a sum of consecutive naturals, for example, 66422 + ... + 78248.

It is an arithmetic number, because the mean of its divisors is an integer number (36406584).

Almost surely, 2^855506045 is an apocalyptic number.

855506045 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

855506045 is a deficient number, since it is larger than the sum of its proper divisors (309504643).

855506045 is a wasteful number, since it uses less digits than its factorization.

855506045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11909.

The product of its (nonzero) digits is 120000, while the sum is 38.

The square root of 855506045 is about 29249.0349413446. The cubic root of 855506045 is about 949.3092097266.

The spelling of 855506045 in words is "eight hundred fifty-five million, five hundred six thousand, forty-five".