85518829 has 16 divisors (see below), whose sum is σ = 98556480. Its totient is φ = 73388160.

The previous prime is 85518827. The next prime is 85518833. The reversal of 85518829 is 92881558.

It is a cyclic number.

It is not a de Polignac number, because 85518829 - 2¹ = 85518827 is a prime.

It is a super-2 number, since 2×85518829² = 14626940227062482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85518827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77409 + ... + 78505.

It is an arithmetic number, because the mean of its divisors is an integer number (6159780).

Almost surely, 2^85518829 is an apocalyptic number.

It is an amenable number.

85518829 is a deficient number, since it is larger than the sum of its proper divisors (13037651).

85518829 is a wasteful number, since it uses less digits than its factorization.

85518829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its digits is 230400, while the sum is 46.

The square root of 85518829 is about 9247.6391041173. The cubic root of 85518829 is about 440.5757425211.

The spelling of 85518829 in words is "eighty-five million, five hundred eighteen thousand, eight hundred twenty-nine".