545340 has 48 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 142080.

The previous prime is 545329. The next prime is 545371. The reversal of 545340 is 43545.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

545340 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3586 + ... + 3734.

It is an arithmetic number, because the mean of its divisors is an integer number (32550).

2⁵⁴⁵³⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781200).

545340 is an abundant number, since it is smaller than the sum of its proper divisors (1017060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545340 is a wasteful number, since it uses less digits than its factorization.

545340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 545340 is about 738.4713941650. The cubic root of 545340 is about 81.7000742583.

Adding to 545340 its reverse (43545), we get a palindrome (588885).

The spelling of 545340 in words is "five hundred forty-five thousand, three hundred forty".