822800161 has 4 divisors (see below), whose sum is σ = 824080432. Its totient is φ = 821519892.

The previous prime is 822800159. The next prime is 822800203. The reversal of 822800161 is 161008228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 822800161 - 2¹ = 822800159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822800101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639171 + ... + 640456.

It is an arithmetic number, because the mean of its divisors is an integer number (206020108).

Almost surely, 2^822800161 is an apocalyptic number.

It is an amenable number.

822800161 is a deficient number, since it is larger than the sum of its proper divisors (1280271).

822800161 is a wasteful number, since it uses less digits than its factorization.

822800161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280270.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 822800161 is about 28684.4933892861. The cubic root of 822800161 is about 937.0543677855.

Adding to 822800161 its reverse (161008228), we get a palindrome (983808389).

The spelling of 822800161 in words is "eight hundred twenty-two million, eight hundred thousand, one hundred sixty-one".