213558 has 8 divisors (see below), whose sum is σ = 427128. Its totient is φ = 71184.

The previous prime is 213557. The next prime is 213589. The reversal of 213558 is 855312.

It is a sphenic number, since it is the product of 3 distinct primes.

213558 is an admirable number.

It is a d-powerful number, because it can be written as 2¹⁵ + 1 + 5 + 3¹¹ + 5⁵ + 8³ .

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 213558.

It is not an unprimeable number, because it can be changed into a prime (213553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17791 + ... + 17802.

It is an arithmetic number, because the mean of its divisors is an integer number (53391).

2²¹³⁵⁵⁸ is an apocalyptic number.

213558 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213558 is a wasteful number, since it uses less digits than its factorization.

213558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35598.

The product of its digits is 1200, while the sum is 24.

The square root of 213558 is about 462.1233601540. The cubic root of 213558 is about 59.7730313924.

The spelling of 213558 in words is "two hundred thirteen thousand, five hundred fifty-eight".