85858755 has 32 divisors (see below), whose sum is σ = 146836800. Its totient is φ = 42688512.

The previous prime is 85858753. The next prime is 85858757. The reversal of 85858755 is 55785858.

It is a Cunningham number, because it is equal to 9266²-1.

It is an interprime number because it is at equal distance from previous prime (85858753) and next prime (85858757).

It is not a de Polignac number, because 85858755 - 2¹ = 85858753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 85858698 and 85858707.

It is not an unprimeable number, because it can be changed into a prime (85858753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26251 + ... + 29339.

It is an arithmetic number, because the mean of its divisors is an integer number (4588650).

Almost surely, 2^85858755 is an apocalyptic number.

85858755 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

85858755 is a deficient number, since it is larger than the sum of its proper divisors (60978045).

85858755 is a wasteful number, since it uses less digits than its factorization.

85858755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223.

The product of its digits is 2240000, while the sum is 51.

The square root of 85858755 is about 9265.9999460393. Note that the first 4 decimals coincide. The cubic root of 85858755 is about 441.1587141664.

The spelling of 85858755 in words is "eighty-five million, eight hundred fifty-eight thousand, seven hundred fifty-five".