545919 has 16 divisors (see below), whose sum is σ = 808704. Its totient is φ = 324800.

The previous prime is 545917. The next prime is 545929. The reversal of 545919 is 919545.

It is a cyclic number.

It is not a de Polignac number, because 545919 - 2¹ = 545917 is a prime.

It is a super-2 number, since 2×545919² = 596055109122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 545919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545911) 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 15 ways as a sum of consecutive naturals, for example, 2227 + ... + 2459.

It is an arithmetic number, because the mean of its divisors is an integer number (50544).

2⁵⁴⁵⁹¹⁹ is an apocalyptic number.

545919 is a deficient number, since it is larger than the sum of its proper divisors (262785).

545919 is a wasteful number, since it uses less digits than its factorization.

545919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318.

The product of its digits is 8100, while the sum is 33.

The square root of 545919 is about 738.8633161824. The cubic root of 545919 is about 81.7289783130.

The spelling of 545919 in words is "five hundred forty-five thousand, nine hundred nineteen".