558540 has 72 divisors (see below), whose sum is σ = 1769040. Its totient is φ = 142464.

The previous prime is 558539. The next prime is 558541. The reversal of 558540 is 45855.

It is an interprime number because it is at equal distance from previous prime (558539) and next prime (558541).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (558541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5167 + ... + 5273.

It is an arithmetic number, because the mean of its divisors is an integer number (24570).

2⁵⁵⁸⁵⁴⁰ 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 558540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884520).

558540 is an abundant number, since it is smaller than the sum of its proper divisors (1210500).

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

558540 is a wasteful number, since it uses less digits than its factorization.

558540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 558540 is about 747.3553371724. The cubic root of 558540 is about 82.3540117908.

It can be divided in two parts, 5585 and 40, that added together give a square (5625 = 75²).

The spelling of 558540 in words is "five hundred fifty-eight thousand, five hundred forty".