85517838 has 36 divisors (see below), whose sum is σ = 215542080. Its totient is φ = 24433416.

The previous prime is 85517833. The next prime is 85517857. The reversal of 85517838 is 83871558.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 85517793 and 85517802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85517833) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 47598 + ... + 49361.

It is an arithmetic number, because the mean of its divisors is an integer number (5987280).

Almost surely, 2^85517838 is an apocalyptic number.

85517838 is an abundant number, since it is smaller than the sum of its proper divisors (130024242).

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

85517838 is a wasteful number, since it uses less digits than its factorization.

85517838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96981 (or 96971 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 85517838 is about 9247.5855227189. The cubic root of 85517838 is about 440.5740407039.

The spelling of 85517838 in words is "eighty-five million, five hundred seventeen thousand, eight hundred thirty-eight".