3221951 has 2 divisors, whose sum is σ = 3221952. Its totient is φ = 3221950.

The previous prime is 3221941. The next prime is 3221957. The reversal of 3221951 is 1591223.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221951 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221957) 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 as a sum of consecutive naturals, namely, 1610975 + 1610976.

It is an arithmetic number, because the mean of its divisors is an integer number (1610976).

Almost surely, 2^3221951 is an apocalyptic number.

3221951 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221951 is an equidigital number, since it uses as much as digits as its factorization.

3221951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 23.

The square root of 3221951 is about 1794.9793870683. The cubic root of 3221951 is about 147.6974431405.

The spelling of 3221951 in words is "three million, two hundred twenty-one thousand, nine hundred fifty-one".