553409 has 4 divisors (see below), whose sum is σ = 568404. Its totient is φ = 538416.

The previous prime is 553369. The next prime is 553411. The reversal of 553409 is 904355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 904355 = 5 ⋅180871.

It can be written as a sum of positive squares in 2 ways, for example, as 330625 + 222784 = 575^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 553409 - 2⁸ = 553153 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553439) 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, 7442 + ... + 7515.

It is an arithmetic number, because the mean of its divisors is an integer number (142101).

2⁵⁵³⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

553409 is a deficient number, since it is larger than the sum of its proper divisors (14995).

553409 is a wasteful number, since it uses less digits than its factorization.

553409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14994.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 553409 is about 743.9146456416. The cubic root of 553409 is about 82.1010552635.

The spelling of 553409 in words is "five hundred fifty-three thousand, four hundred nine".