85140518 has 16 divisors (see below), whose sum is σ = 132786864. Its totient is φ = 40909440.

The previous prime is 85140511. The next prime is 85140529. The reversal of 85140518 is 81504158.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85140511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2255 + ... + 13242.

It is an arithmetic number, because the mean of its divisors is an integer number (8299179).

Almost surely, 2^85140518 is an apocalyptic number.

85140518 is a deficient number, since it is larger than the sum of its proper divisors (47646346).

85140518 is a wasteful number, since it uses less digits than its factorization.

85140518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15607.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 85140518 is about 9227.1619688830. The cubic root of 85140518 is about 439.9251215556.

It can be divided in two parts, 85140 and 518, that added together give a palindrome (85658).

The spelling of 85140518 in words is "eighty-five million, one hundred forty thousand, five hundred eighteen".