545493 has 16 divisors (see below), whose sum is σ = 798336. Its totient is φ = 329280.

The previous prime is 545483. The next prime is 545497. The reversal of 545493 is 394545.

It is not a de Polignac number, because 545493 - 2⁴ = 545477 is a prime.

It is a super-2 number, since 2×545493² = 595125226098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 545493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2671 + ... + 2867.

It is an arithmetic number, because the mean of its divisors is an integer number (49896).

2⁵⁴⁵⁴⁹³ is an apocalyptic number.

It is an amenable number.

545493 is a deficient number, since it is larger than the sum of its proper divisors (252843).

545493 is a wasteful number, since it uses less digits than its factorization.

545493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284.

The product of its digits is 10800, while the sum is 30.

The square root of 545493 is about 738.5749792675. The cubic root of 545493 is about 81.7077141054.

The spelling of 545493 in words is "five hundred forty-five thousand, four hundred ninety-three".