545880 has 32 divisors (see below), whose sum is σ = 1638000. Its totient is φ = 145536.

The previous prime is 545873. The next prime is 545893. The reversal of 545880 is 88545.

545880 is nontrivially palindromic in base 16.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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, 2155 + ... + 2394.

2⁵⁴⁵⁸⁸⁰ is an apocalyptic number.

It is an amenable number.

545880 is an abundant number, since it is smaller than the sum of its proper divisors (1092120).

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

545880 is a wasteful number, since it uses less digits than its factorization.

545880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563 (or 4559 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 545880 is about 738.8369238201. The cubic root of 545880 is about 81.7270320499.

The spelling of 545880 in words is "five hundred forty-five thousand, eight hundred eighty".