201582 has 16 divisors (see below), whose sum is σ = 448080. Its totient is φ = 67176.

The previous prime is 201581. The next prime is 201589. The reversal of 201582 is 285102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1813 + ... + 1920.

It is an arithmetic number, because the mean of its divisors is an integer number (28005).

2²⁰¹⁵⁸² is an apocalyptic number.

201582 is an abundant number, since it is smaller than the sum of its proper divisors (246498).

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

201582 is a wasteful number, since it uses less digits than its factorization.

201582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744 (or 3738 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 201582 is about 448.9788413723. The cubic root of 201582 is about 58.6341431875.

Adding to 201582 its reverse (285102), we get a palindrome (486684).

The spelling of 201582 in words is "two hundred one thousand, five hundred eighty-two".