581376 has 36 divisors (see below), whose sum is σ = 1549352. Its totient is φ = 193536.

The previous prime is 581369. The next prime is 581377. The reversal of 581376 is 673185.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581377) 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, 390 + ... + 1146.

2⁵⁸¹³⁷⁶ 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 581376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (774676).

581376 is an abundant number, since it is smaller than the sum of its proper divisors (967976).

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

581376 is an equidigital number, since it uses as much as digits as its factorization.

581376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 762 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 581376 is about 762.4801636764. The cubic root of 581376 is about 83.4614066215.

Subtracting 581376 from its reverse (673185), we obtain a square (91809 = 303²).

The spelling of 581376 in words is "five hundred eighty-one thousand, three hundred seventy-six".