534509 has 4 divisors (see below), whose sum is σ = 536316. Its totient is φ = 532704.

The previous prime is 534491. The next prime is 534511. The reversal of 534509 is 905435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 905435 = 5 ⋅181087.

It can be written as a sum of positive squares in 2 ways, for example, as 372100 + 162409 = 610^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 534509 - 2⁸ = 534253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344 + ... + 1089.

It is an arithmetic number, because the mean of its divisors is an integer number (134079).

2⁵³⁴⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

534509 is a deficient number, since it is larger than the sum of its proper divisors (1807).

534509 is a wasteful number, since it uses less digits than its factorization.

534509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

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

The square root of 534509 is about 731.1012241817. The cubic root of 534509 is about 81.1555715605.

The spelling of 534509 in words is "five hundred thirty-four thousand, five hundred nine".