545249 has 4 divisors (see below), whose sum is σ = 547860. Its totient is φ = 542640.

The previous prime is 545239. The next prime is 545257. The reversal of 545249 is 942545.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 208849 + 336400 = 457^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 545249 - 2¹² = 541153 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 962 + ... + 1419.

It is an arithmetic number, because the mean of its divisors is an integer number (136965).

2⁵⁴⁵²⁴⁹ is an apocalyptic number.

It is an amenable number.

545249 is a deficient number, since it is larger than the sum of its proper divisors (2611).

545249 is a wasteful number, since it uses less digits than its factorization.

545249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610.

The product of its digits is 7200, while the sum is 29.

The square root of 545249 is about 738.4097778334. The cubic root of 545249 is about 81.6955296193.

It can be divided in two parts, 5 and 45249, that added together give a palindrome (45254).

The spelling of 545249 in words is "five hundred forty-five thousand, two hundred forty-nine".