545229 has 12 divisors (see below), whose sum is σ = 815100. Its totient is φ = 350784.

The previous prime is 545213. The next prime is 545231. The reversal of 545229 is 922545.

545229 = 67² + 68² + ... + 124².

It can be written as a sum of positive squares in 2 ways, for example, as 393129 + 152100 = 627^2 + 390^2 .

It is not a de Polignac number, because 545229 - 2⁴ = 545213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784 + ... + 1305.

It is an arithmetic number, because the mean of its divisors is an integer number (67925).

2⁵⁴⁵²²⁹ is an apocalyptic number.

It is an amenable number.

545229 is a deficient number, since it is larger than the sum of its proper divisors (269871).

545229 is a wasteful number, since it uses less digits than its factorization.

545229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124 (or 2121 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 545229 is about 738.3962350933. The cubic root of 545229 is about 81.6945307298.

The spelling of 545229 in words is "five hundred forty-five thousand, two hundred twenty-nine".