322275721 has 4 divisors (see below), whose sum is σ = 332671744. Its totient is φ = 311879700.

The previous prime is 322275691. The next prime is 322275727. The reversal of 322275721 is 127572223.

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 322275721 - 2⁵ = 322275689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 10395991 = 322275721 / (3 + 2 + 2 + 2 + 7 + 5 + 7 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (322275727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5197965 + ... + 5198026.

It is an arithmetic number, because the mean of its divisors is an integer number (83167936).

Almost surely, 2^322275721 is an apocalyptic number.

322275721 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

322275721 is a deficient number, since it is larger than the sum of its proper divisors (10396023).

322275721 is a wasteful number, since it uses less digits than its factorization.

322275721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10396022.

The product of its digits is 11760, while the sum is 31.

The square root of 322275721 is about 17952.0394663113. The cubic root of 322275721 is about 685.6079785245.

The spelling of 322275721 in words is "three hundred twenty-two million, two hundred seventy-five thousand, seven hundred twenty-one".