822251 has 8 divisors (see below), whose sum is σ = 859104. Its totient is φ = 786240.

The previous prime is 822233. The next prime is 822253. The reversal of 822251 is 152228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 822251 - 2¹⁴ = 805867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2471 + ... + 2783.

It is an arithmetic number, because the mean of its divisors is an integer number (107388).

2⁸²²²⁵¹ is an apocalyptic number.

822251 is a deficient number, since it is larger than the sum of its proper divisors (36853).

822251 is a wasteful number, since it uses less digits than its factorization.

822251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its digits is 320, while the sum is 20.

The square root of 822251 is about 906.7805688258. The cubic root of 822251 is about 93.6845848850.

Adding to 822251 its reverse (152228), we get a palindrome (974479).

The spelling of 822251 in words is "eight hundred twenty-two thousand, two hundred fifty-one".