1722252361 has 2 divisors, whose sum is σ = 1722252362. Its totient is φ = 1722252360.

The previous prime is 1722252277. The next prime is 1722252457. The reversal of 1722252361 is 1632522271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1620867600 + 101384761 = 40260^2 + 10069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1722252361 is a prime.

It is a super-4 number, since 4×1722252361⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1722252661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861126180 + 861126181.

It is an arithmetic number, because the mean of its divisors is an integer number (861126181).

Almost surely, 2^1722252361 is an apocalyptic number.

It is an amenable number.

1722252361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1722252361 is an equidigital number, since it uses as much as digits as its factorization.

1722252361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 1722252361 is about 41500.0284457734. The cubic root of 1722252361 is about 1198.6680501476.

The spelling of 1722252361 in words is "one billion, seven hundred twenty-two million, two hundred fifty-two thousand, three hundred sixty-one".