85219100 has 18 divisors (see below), whose sum is σ = 184925664. Its totient is φ = 34087600.

The previous prime is 85219097. The next prime is 85219133. The reversal of 85219100 is 191258.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 85219100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425996 + ... + 426195.

It is an arithmetic number, because the mean of its divisors is an integer number (10273648).

Almost surely, 2^85219100 is an apocalyptic number.

It is an amenable number.

85219100 is an abundant number, since it is smaller than the sum of its proper divisors (99706564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85219100 is a wasteful number, since it uses less digits than its factorization.

85219100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852205 (or 852198 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 85219100 is about 9231.4191758364. The cubic root of 85219100 is about 440.0604255856.

The spelling of 85219100 in words is "eighty-five million, two hundred nineteen thousand, one hundred".