1721094533 has 2 divisors, whose sum is σ = 1721094534. Its totient is φ = 1721094532.

The previous prime is 1721094517. The next prime is 1721094559. The reversal of 1721094533 is 3354901271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 883397284 + 837697249 = 29722^2 + 28943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1721094533 - 2⁴ = 1721094517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1721094493 and 1721094502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1721094733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860547266 + 860547267.

It is an arithmetic number, because the mean of its divisors is an integer number (860547267).

Almost surely, 2^1721094533 is an apocalyptic number.

It is an amenable number.

1721094533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1721094533 is an equidigital number, since it uses as much as digits as its factorization.

1721094533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 1721094533 is about 41486.0763750924. The cubic root of 1721094533 is about 1198.3993782261.

The spelling of 1721094533 in words is "one billion, seven hundred twenty-one million, ninety-four thousand, five hundred thirty-three".