85161100 has 36 divisors (see below), whose sum is σ = 189316008. Its totient is φ = 33232000.

The previous prime is 85161073. The next prime is 85161107. The reversal of 85161100 is 116158.

It is not an unprimeable number, because it can be changed into a prime (85161107) 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, 6286 + ... + 14485.

It is an arithmetic number, because the mean of its divisors is an integer number (5258778).

Almost surely, 2^85161100 is an apocalyptic number.

It is an amenable number.

85161100 is an abundant number, since it is smaller than the sum of its proper divisors (104154908).

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

85161100 is a wasteful number, since it uses less digits than its factorization.

85161100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20826 (or 20819 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 85161100 is about 9228.2771956633. The cubic root of 85161100 is about 439.9605680916.

Adding to 85161100 its reverse (116158), we get a palindrome (85277258).

The spelling of 85161100 in words is "eighty-five million, one hundred sixty-one thousand, one hundred".