85858513 has 8 divisors (see below), whose sum is σ = 92536808. Its totient is φ = 79190784.

The previous prime is 85858481. The next prime is 85858523. The reversal of 85858513 is 31585858.

It can be written as a sum of positive squares in 4 ways, for example, as 15499969 + 70358544 = 3937^2 + 8388^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85858513 - 2⁵ = 85858481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85858513.

It is not an unprimeable number, because it can be changed into a prime (85858523) 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, 25081 + ... + 28297.

It is an arithmetic number, because the mean of its divisors is an integer number (11567101).

Almost surely, 2^85858513 is an apocalyptic number.

It is an amenable number.

85858513 is a deficient number, since it is larger than the sum of its proper divisors (6678295).

85858513 is a wasteful number, since it uses less digits than its factorization.

85858513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283.

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

The square root of 85858513 is about 9265.9868875366. The cubic root of 85858513 is about 441.1582996852.

The spelling of 85858513 in words is "eighty-five million, eight hundred fifty-eight thousand, five hundred thirteen".