1720573441 has 2 divisors, whose sum is σ = 1720573442. Its totient is φ = 1720573440.

The previous prime is 1720573433. The next prime is 1720573529. The reversal of 1720573441 is 1443750271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1706103025 + 14470416 = 41305^2 + 3804^2 .

It is an emirp because it is prime and its reverse (1443750271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1720573441 - 2³ = 1720573433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1720573397 and 1720573406.

It is not a weakly prime, because it can be changed into another prime (1720573411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860286720 + 860286721.

It is an arithmetic number, because the mean of its divisors is an integer number (860286721).

Almost surely, 2^1720573441 is an apocalyptic number.

It is an amenable number.

1720573441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720573441 is an equidigital number, since it uses as much as digits as its factorization.

1720573441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 1720573441 is about 41479.7955756776. The cubic root of 1720573441 is about 1198.2784204380.

The spelling of 1720573441 in words is "one billion, seven hundred twenty million, five hundred seventy-three thousand, four hundred forty-one".