553309 has 2 divisors, whose sum is σ = 553310. Its totient is φ = 553308.

The previous prime is 553279. The next prime is 553351. The reversal of 553309 is 903355.

553309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348100 + 205209 = 590^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 553309 - 2⁵ = 553277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276654 + 276655.

It is an arithmetic number, because the mean of its divisors is an integer number (276655).

2⁵⁵³³⁰⁹ is an apocalyptic number.

It is an amenable number.

553309 is a deficient number, since it is larger than the sum of its proper divisors (1).

553309 is an equidigital number, since it uses as much as digits as its factorization.

553309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2025, while the sum is 25.

The square root of 553309 is about 743.8474305931. The cubic root of 553309 is about 82.0961097951.

It can be divided in two parts, 55 and 3309, that added together give a square (3364 = 58²).

The spelling of 553309 in words is "five hundred fifty-three thousand, three hundred nine".