85451859 has 12 divisors (see below), whose sum is σ = 124704216. Its totient is φ = 56380032.

The previous prime is 85451857. The next prime is 85451881. The reversal of 85451859 is 95815458.

It is a happy number.

85451859 is a `hidden beast` number, since 85 + 4 + 518 + 59 = 666.

It is not a de Polignac number, because 85451859 - 2¹ = 85451857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85451857) 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, 48069 + ... + 49814.

It is an arithmetic number, because the mean of its divisors is an integer number (10392018).

Almost surely, 2^85451859 is an apocalyptic number.

85451859 is a deficient number, since it is larger than the sum of its proper divisors (39252357).

85451859 is a wasteful number, since it uses less digits than its factorization.

85451859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97986 (or 97983 counting only the distinct ones).

The product of its digits is 288000, while the sum is 45.

The square root of 85451859 is about 9244.0174707754. The cubic root of 85451859 is about 440.4607071810.

It can be divided in two parts, 8545 and 1859, that added together give a square (10404 = 102²).

The spelling of 85451859 in words is "eighty-five million, four hundred fifty-one thousand, eight hundred fifty-nine".