85513885 has 16 divisors (see below), whose sum is σ = 109574784. Its totient is φ = 63911232.

The previous prime is 85513873. The next prime is 85513907. The reversal of 85513885 is 58831558.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85513885 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3702 + ... + 13591.

It is an arithmetic number, because the mean of its divisors is an integer number (6848424).

Almost surely, 2^85513885 is an apocalyptic number.

It is an amenable number.

85513885 is a deficient number, since it is larger than the sum of its proper divisors (24060899).

85513885 is a wasteful number, since it uses less digits than its factorization.

85513885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17364.

The product of its digits is 192000, while the sum is 43.

The square root of 85513885 is about 9247.3717887841. The cubic root of 85513885 is about 440.5672521942.

The spelling of 85513885 in words is "eighty-five million, five hundred thirteen thousand, eight hundred eighty-five".