850165273 has 2 divisors, whose sum is σ = 850165274. Its totient is φ = 850165272.

The previous prime is 850165271. The next prime is 850165301. The reversal of 850165273 is 372561058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443860624 + 406304649 = 21068^2 + 20157^2 .

It is a cyclic number.

It is not a de Polignac number, because 850165273 - 2¹ = 850165271 is a prime.

Together with 850165271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (850165271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425082636 + 425082637.

It is an arithmetic number, because the mean of its divisors is an integer number (425082637).

Almost surely, 2^850165273 is an apocalyptic number.

It is an amenable number.

850165273 is a deficient number, since it is larger than the sum of its proper divisors (1).

850165273 is an equidigital number, since it uses as much as digits as its factorization.

850165273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 850165273 is about 29157.5937450264. The cubic root of 850165273 is about 947.3296284477.

The spelling of 850165273 in words is "eight hundred fifty million, one hundred sixty-five thousand, two hundred seventy-three".