553609 has 4 divisors (see below), whose sum is σ = 632704. Its totient is φ = 474516.

The previous prime is 553607. The next prime is 553627. The reversal of 553609 is 906355.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 553609 - 2¹ = 553607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39537 + ... + 39550.

It is an arithmetic number, because the mean of its divisors is an integer number (158176).

2⁵⁵³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

553609 is a deficient number, since it is larger than the sum of its proper divisors (79095).

553609 is an equidigital number, since it uses as much as digits as its factorization.

553609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79094.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 553609 is about 744.0490575224. The cubic root of 553609 is about 82.1109444132.

The spelling of 553609 in words is "five hundred fifty-three thousand, six hundred nine".