545539 has 4 divisors (see below), whose sum is σ = 547624. Its totient is φ = 543456.

The previous prime is 545533. The next prime is 545543. The reversal of 545539 is 935545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545539 - 2¹³ = 537347 is a prime.

It is a super-2 number, since 2×545539² = 595225601042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545539.

It is not an unprimeable number, because it can be changed into a prime (545533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (136906).

2⁵⁴⁵⁵³⁹ is an apocalyptic number.

545539 is a deficient number, since it is larger than the sum of its proper divisors (2085).

545539 is a wasteful number, since it uses less digits than its factorization.

545539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084.

The product of its digits is 13500, while the sum is 31.

The square root of 545539 is about 738.6061196605. The cubic root of 545539 is about 81.7100107735.

The spelling of 545539 in words is "five hundred forty-five thousand, five hundred thirty-nine".