852821173 has 2 divisors, whose sum is σ = 852821174. Its totient is φ = 852821172.

The previous prime is 852821147. The next prime is 852821219. The reversal of 852821173 is 371128258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772951204 + 79869969 = 27802^2 + 8937^2 .

It is a cyclic number.

It is not a de Polignac number, because 852821173 - 2¹⁷ = 852690101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852821143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426410586 + 426410587.

It is an arithmetic number, because the mean of its divisors is an integer number (426410587).

Almost surely, 2^852821173 is an apocalyptic number.

It is an amenable number.

852821173 is a deficient number, since it is larger than the sum of its proper divisors (1).

852821173 is an equidigital number, since it uses as much as digits as its factorization.

852821173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 37.

The square root of 852821173 is about 29203.1021126181. The cubic root of 852821173 is about 948.3150828394.

The spelling of 852821173 in words is "eight hundred fifty-two million, eight hundred twenty-one thousand, one hundred seventy-three".