196522321 has 2 divisors, whose sum is σ = 196522322. Its totient is φ = 196522320.

The previous prime is 196522303. The next prime is 196522349. The reversal of 196522321 is 123225691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171321921 + 25200400 = 13089^2 + 5020^2 .

It is an emirp because it is prime and its reverse (123225691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196522321 - 2⁵ = 196522289 is a prime.

It is not a weakly prime, because it can be changed into another prime (196522021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98261160 + 98261161.

It is an arithmetic number, because the mean of its divisors is an integer number (98261161).

Almost surely, 2^196522321 is an apocalyptic number.

It is an amenable number.

196522321 is a deficient number, since it is larger than the sum of its proper divisors (1).

196522321 is an equidigital number, since it uses as much as digits as its factorization.

196522321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 196522321 is about 14018.6419099712. The cubic root of 196522321 is about 581.3941107043.

The spelling of 196522321 in words is "one hundred ninety-six million, five hundred twenty-two thousand, three hundred twenty-one".