85550811 has 12 divisors (see below), whose sum is σ = 115717416. Its totient is φ = 56220640.

The previous prime is 85550809. The next prime is 85550819. The reversal of 85550811 is 11805558.

It is not a de Polignac number, because 85550811 - 2¹ = 85550809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85550819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12295 + ... + 17951.

It is an arithmetic number, because the mean of its divisors is an integer number (9643118).

Almost surely, 2^85550811 is an apocalyptic number.

85550811 is a deficient number, since it is larger than the sum of its proper divisors (30166605).

85550811 is an equidigital number, since it uses as much as digits as its factorization.

85550811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5802 (or 5731 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 85550811 is about 9249.3681405813. The cubic root of 85550811 is about 440.6306572786.

The spelling of 85550811 in words is "eighty-five million, five hundred fifty thousand, eight hundred eleven".