855083091 has 32 divisors (see below), whose sum is σ = 1180365120. Its totient is φ = 550416384.

The previous prime is 855083083. The next prime is 855083129. The reversal of 855083091 is 190380558.

It is not a de Polignac number, because 855083091 - 2³ = 855083083 is a prime.

It is a super-2 number, since 2×855083091² = 1462334185028228562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (855083041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2697265 + ... + 2697581.

It is an arithmetic number, because the mean of its divisors is an integer number (36886410).

Almost surely, 2^855083091 is an apocalyptic number.

855083091 is a deficient number, since it is larger than the sum of its proper divisors (325282029).

855083091 is a wasteful number, since it uses less digits than its factorization.

855083091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 855083091 is about 29241.8038260296. The cubic root of 855083091 is about 949.1527408092.

The spelling of 855083091 in words is "eight hundred fifty-five million, eighty-three thousand, ninety-one".