85827555 has 48 divisors (see below), whose sum is σ = 166289760. Its totient is φ = 40588800.

The previous prime is 85827551. The next prime is 85827563. The reversal of 85827555 is 55572858.

It is not a de Polignac number, because 85827555 - 2² = 85827551 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 85827555.

It is not an unprimeable number, because it can be changed into a prime (85827551) 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 47 ways as a sum of consecutive naturals, for example, 18181 + ... + 22409.

It is an arithmetic number, because the mean of its divisors is an integer number (3464370).

Almost surely, 2^85827555 is an apocalyptic number.

85827555 is a deficient number, since it is larger than the sum of its proper divisors (80462205).

85827555 is a wasteful number, since it uses less digits than its factorization.

85827555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292 (or 4289 counting only the distinct ones).

The product of its digits is 560000, while the sum is 45.

The square root of 85827555 is about 9264.3162186963. The cubic root of 85827555 is about 441.1052705020.

The spelling of 85827555 in words is "eighty-five million, eight hundred twenty-seven thousand, five hundred fifty-five".