85799250 has 160 divisors (see below), whose sum is σ = 253693440. Its totient is φ = 21578400.

The previous prime is 85799239. The next prime is 85799251. The reversal of 85799250 is 5299758.

It is a happy number.

It is a super-2 number, since 2×85799250² = 14723022601125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85799196 and 85799205.

It is not an unprimeable number, because it can be changed into a prime (85799251) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 384639 + ... + 384861.

It is an arithmetic number, because the mean of its divisors is an integer number (1585584).

Almost surely, 2^85799250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85799250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126846720).

85799250 is an abundant number, since it is smaller than the sum of its proper divisors (167894190).

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

85799250 is a wasteful number, since it uses less digits than its factorization.

85799250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 85799250 is about 9262.7884570468. The cubic root of 85799250 is about 441.0567745869.

The spelling of 85799250 in words is "eighty-five million, seven hundred ninety-nine thousand, two hundred fifty".