545215 has 16 divisors (see below), whose sum is σ = 746496. Its totient is φ = 378400.

The previous prime is 545213. The next prime is 545231. The reversal of 545215 is 512545.

It is not a de Polignac number, because 545215 - 2¹ = 545213 is a prime.

It is a Duffinian number.

545215 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545213) 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, 1050 + ... + 1480.

It is an arithmetic number, because the mean of its divisors is an integer number (46656).

2⁵⁴⁵²¹⁵ is an apocalyptic number.

545215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

545215 is a deficient number, since it is larger than the sum of its proper divisors (201281).

545215 is a wasteful number, since it uses less digits than its factorization.

545215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470.

The product of its digits is 1000, while the sum is 22.

The square root of 545215 is about 738.3867550275. The cubic root of 545215 is about 81.6938314926.

The spelling of 545215 in words is "five hundred forty-five thousand, two hundred fifteen".