545203 has 2 divisors, whose sum is σ = 545204. Its totient is φ = 545202.

The previous prime is 545189. The next prime is 545213. The reversal of 545203 is 302545.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545203 - 2¹³ = 537011 is a prime.

It is a super-2 number, since 2×545203² = 594492622418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (545213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272601 + 272602.

It is an arithmetic number, because the mean of its divisors is an integer number (272602).

2⁵⁴⁵²⁰³ is an apocalyptic number.

545203 is a deficient number, since it is larger than the sum of its proper divisors (1).

545203 is an equidigital number, since it uses as much as digits as its factorization.

545203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 545203 is about 738.3786291599. The cubic root of 545203 is about 81.6932321368.

Adding to 545203 its reverse (302545), we get a palindrome (847748).

The spelling of 545203 in words is "five hundred forty-five thousand, two hundred three".