553740809 has 2 divisors, whose sum is σ = 553740810. Its totient is φ = 553740808.

The previous prime is 553740797. The next prime is 553740827. The reversal of 553740809 is 908047355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424236409 + 129504400 = 20597^2 + 11380^2 .

It is a cyclic number.

It is not a de Polignac number, because 553740809 - 2²⁸ = 285305353 is a prime.

It is not a weakly prime, because it can be changed into another prime (553740899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276870404 + 276870405.

It is an arithmetic number, because the mean of its divisors is an integer number (276870405).

Almost surely, 2^553740809 is an apocalyptic number.

It is an amenable number.

553740809 is a deficient number, since it is larger than the sum of its proper divisors (1).

553740809 is an equidigital number, since it uses as much as digits as its factorization.

553740809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 553740809 is about 23531.6979625356. The cubic root of 553740809 is about 821.1746050588.

The spelling of 553740809 in words is "five hundred fifty-three million, seven hundred forty thousand, eight hundred nine".