85291933 has 2 divisors, whose sum is σ = 85291934. Its totient is φ = 85291932.

The previous prime is 85291909. The next prime is 85291937. The reversal of 85291933 is 33919258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78464164 + 6827769 = 8858^2 + 2613^2 .

It is a cyclic number.

It is not a de Polignac number, because 85291933 - 2²⁵ = 51737501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85291937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42645966 + 42645967.

It is an arithmetic number, because the mean of its divisors is an integer number (42645967).

Almost surely, 2^85291933 is an apocalyptic number.

It is an amenable number.

85291933 is a deficient number, since it is larger than the sum of its proper divisors (1).

85291933 is an equidigital number, since it uses as much as digits as its factorization.

85291933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 40.

The square root of 85291933 is about 9235.3631763997. The cubic root of 85291933 is about 440.1857566224.

The spelling of 85291933 in words is "eighty-five million, two hundred ninety-one thousand, nine hundred thirty-three".