591220 has 48 divisors (see below), whose sum is σ = 1467648. Its totient is φ = 195840.

The previous prime is 591193. The next prime is 591233. The reversal of 591220 is 22195.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5689 + ... + 5791.

It is an arithmetic number, because the mean of its divisors is an integer number (30576).

2⁵⁹¹²²⁰ 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 591220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733824).

591220 is an abundant number, since it is smaller than the sum of its proper divisors (876428).

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

591220 is a wasteful number, since it uses less digits than its factorization.

591220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 591220 is about 768.9083170314. The cubic root of 591220 is about 83.9298355885.

The spelling of 591220 in words is "five hundred ninety-one thousand, two hundred twenty".