581541016 has 96 divisors (see below), whose sum is σ = 1349641440. Its totient is φ = 233705472.

The previous prime is 581540989. The next prime is 581541019. The reversal of 581541016 is 610145185.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581541019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 477240 + ... + 478456.

It is an arithmetic number, because the mean of its divisors is an integer number (14058765).

Almost surely, 2^581541016 is an apocalyptic number.

581541016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 581541016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674820720).

581541016 is an abundant number, since it is smaller than the sum of its proper divisors (768100424).

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

581541016 is a wasteful number, since it uses less digits than its factorization.

581541016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 581541016 is about 24115.1615379205. The cubic root of 581541016 is about 834.6930235201.

The spelling of 581541016 in words is "five hundred eighty-one million, five hundred forty-one thousand, sixteen".