545480 has 32 divisors (see below), whose sum is σ = 1323000. Its totient is φ = 201216.

The previous prime is 545477. The next prime is 545483. The reversal of 545480 is 84545.

It is an interprime number because it is at equal distance from previous prime (545477) and next prime (545483).

It can be written as a sum of positive squares in 4 ways, for example, as 454276 + 91204 = 674^2 + 302^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5 + ... + 1044.

2⁵⁴⁵⁴⁸⁰ 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 545480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661500).

545480 is an abundant number, since it is smaller than the sum of its proper divisors (777520).

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

545480 is a wasteful number, since it uses less digits than its factorization.

545480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 545480 is about 738.5661784837. The cubic root of 545480 is about 81.7070650236.

The spelling of 545480 in words is "five hundred forty-five thousand, four hundred eighty".