1722443 has 2 divisors, whose sum is σ = 1722444. Its totient is φ = 1722442.

The previous prime is 1722431. The next prime is 1722449. The reversal of 1722443 is 3442271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1722443 - 2⁸ = 1722187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1722449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861221 + 861222.

It is an arithmetic number, because the mean of its divisors is an integer number (861222).

2^1722443 is an apocalyptic number.

1722443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1722443 is an equidigital number, since it uses as much as digits as its factorization.

1722443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 23.

The square root of 1722443 is about 1312.4187593905. The cubic root of 1722443 is about 119.8712276041.

The spelling of 1722443 in words is "one million, seven hundred twenty-two thousand, four hundred forty-three".