85220433 has 6 divisors (see below), whose sum is σ = 123096194. Its totient is φ = 56813616.

The previous prime is 85220423. The next prime is 85220459. The reversal of 85220433 is 33402258.

85220433 is a `hidden beast` number, since 8 + 5 + 220 + 433 = 666.

It can be written as a sum of positive squares in only one way, i.e., 84768849 + 451584 = 9207^2 + 672^2 .

It is not a de Polignac number, because 85220433 - 2²² = 81026129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85220397 and 85220406.

It is not an unprimeable number, because it can be changed into a prime (85220413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4734460 + ... + 4734477.

Almost surely, 2^85220433 is an apocalyptic number.

It is an amenable number.

85220433 is a deficient number, since it is larger than the sum of its proper divisors (37875761).

85220433 is a wasteful number, since it uses less digits than its factorization.

85220433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468943 (or 9468940 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 85220433 is about 9231.4913746371. The cubic root of 85220433 is about 440.0627200536.

The spelling of 85220433 in words is "eighty-five million, two hundred twenty thousand, four hundred thirty-three".