545958 has 36 divisors (see below), whose sum is σ = 1378260. Its totient is φ = 155736.

The previous prime is 545947. The next prime is 545959. The reversal of 545958 is 859545.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 545958.

It is not an unprimeable number, because it can be changed into a prime (545959) by changing a digit.

545958 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 17 ways as a sum of consecutive naturals, for example, 573 + ... + 1191.

It is an arithmetic number, because the mean of its divisors is an integer number (38285).

2⁵⁴⁵⁹⁵⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689130).

545958 is an abundant number, since it is smaller than the sum of its proper divisors (832302).

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

545958 is a wasteful number, since it uses less digits than its factorization.

545958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 631 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 545958 is about 738.8897076019. The cubic root of 545958 is about 81.7309244834.

The spelling of 545958 in words is "five hundred forty-five thousand, nine hundred fifty-eight".