85181100 has 36 divisors (see below), whose sum is σ = 246458184. Its totient is φ = 22714880.

The previous prime is 85181093. The next prime is 85181113. The reversal of 85181100 is 118158.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141669 + ... + 142268.

Almost surely, 2^85181100 is an apocalyptic number.

It is an amenable number.

85181100 is an abundant number, since it is smaller than the sum of its proper divisors (161277084).

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

85181100 is a wasteful number, since it uses less digits than its factorization.

85181100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283954 (or 283947 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 85181100 is about 9229.3607579290. The cubic root of 85181100 is about 439.9950068304.

Adding to 85181100 its reverse (118158), we get a palindrome (85299258).

The spelling of 85181100 in words is "eighty-five million, one hundred eighty-one thousand, one hundred".