545900 has 36 divisors (see below), whose sum is σ = 1218672. Its totient is φ = 212160.

The previous prime is 545899. The next prime is 545911. The reversal of 545900 is 9545.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5249 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (33852).

2⁵⁴⁵⁹⁰⁰ is an apocalyptic number.

545900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609336).

545900 is an abundant number, since it is smaller than the sum of its proper divisors (672772).

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

545900 is a wasteful number, since it uses less digits than its factorization.

545900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 545900 is about 738.8504584826. The cubic root of 545900 is about 81.7280301451.

The spelling of 545900 in words is "five hundred forty-five thousand, nine hundred".