85772933 has 2 divisors, whose sum is σ = 85772934. Its totient is φ = 85772932.

The previous prime is 85772927. The next prime is 85772971. The reversal of 85772933 is 33927758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77141089 + 8631844 = 8783^2 + 2938^2 .

It is a cyclic number.

It is not a de Polignac number, because 85772933 - 2¹⁴ = 85756549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85772033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42886466 + 42886467.

It is an arithmetic number, because the mean of its divisors is an integer number (42886467).

Almost surely, 2^85772933 is an apocalyptic number.

It is an amenable number.

85772933 is a deficient number, since it is larger than the sum of its proper divisors (1).

85772933 is an equidigital number, since it uses as much as digits as its factorization.

85772933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 44.

The square root of 85772933 is about 9261.3677715551. The cubic root of 85772933 is about 441.0116752102.

The spelling of 85772933 in words is "eighty-five million, seven hundred seventy-two thousand, nine hundred thirty-three".