85812473 has 2 divisors, whose sum is σ = 85812474. Its totient is φ = 85812472.

The previous prime is 85812451. The next prime is 85812499. The reversal of 85812473 is 37421858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84584809 + 1227664 = 9197^2 + 1108^2 .

It is a cyclic number.

It is not a de Polignac number, because 85812473 - 2⁶ = 85812409 is a prime.

It is not a weakly prime, because it can be changed into another prime (85812443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42906236 + 42906237.

It is an arithmetic number, because the mean of its divisors is an integer number (42906237).

Almost surely, 2^85812473 is an apocalyptic number.

It is an amenable number.

85812473 is a deficient number, since it is larger than the sum of its proper divisors (1).

85812473 is an equidigital number, since it uses as much as digits as its factorization.

85812473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 38.

The square root of 85812473 is about 9263.5021994924. The cubic root of 85812473 is about 441.0794313279.

It can be divided in two parts, 858 and 12473, that added together give a palindrome (13331).

The spelling of 85812473 in words is "eighty-five million, eight hundred twelve thousand, four hundred seventy-three".