85823057 has 6 divisors (see below), whose sum is σ = 90578178. Its totient is φ = 81305712.

The previous prime is 85823041. The next prime is 85823083. The reversal of 85823057 is 75032858.

It can be written as a sum of positive squares in only one way, i.e., 84566416 + 1256641 = 9196^2 + 1121^2 .

It is not a de Polignac number, because 85823057 - 2⁴ = 85823041 is a prime.

It is a super-2 number, since 2×85823057² = 14731194225650498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85823057.

It is not an unprimeable number, because it can be changed into a prime (85823027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118508 + ... + 119229.

It is an arithmetic number, because the mean of its divisors is an integer number (15096363).

Almost surely, 2^85823057 is an apocalyptic number.

It is an amenable number.

85823057 is a deficient number, since it is larger than the sum of its proper divisors (4755121).

85823057 is a wasteful number, since it uses less digits than its factorization.

85823057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237775 (or 237756 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 85823057 is about 9264.0734560991. The cubic root of 85823057 is about 441.0975646389.

The spelling of 85823057 in words is "eighty-five million, eight hundred twenty-three thousand, fifty-seven".