3221437 has 2 divisors, whose sum is σ = 3221438. Its totient is φ = 3221436.

The previous prime is 3221429. The next prime is 3221441. The reversal of 3221437 is 7341223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2042041 + 1179396 = 1429^2 + 1086^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221437 - 2³ = 3221429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221497) 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, 1610718 + 1610719.

It is an arithmetic number, because the mean of its divisors is an integer number (1610719).

Almost surely, 2^3221437 is an apocalyptic number.

It is an amenable number.

3221437 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221437 is an equidigital number, since it uses as much as digits as its factorization.

3221437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 22.

The square root of 3221437 is about 1794.8362042259. The cubic root of 3221437 is about 147.6895886321.

The spelling of 3221437 in words is "three million, two hundred twenty-one thousand, four hundred thirty-seven".