581487 has 8 divisors (see below), whose sum is σ = 779520. Its totient is φ = 385560.

The previous prime is 581473. The next prime is 581491. The reversal of 581487 is 784185.

It is a happy number.

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

It is not a de Polignac number, because 581487 - 2¹⁵ = 548719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581407) 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, 312 + ... + 1122.

It is an arithmetic number, because the mean of its divisors is an integer number (97440).

2⁵⁸¹⁴⁸⁷ is an apocalyptic number.

581487 is a deficient number, since it is larger than the sum of its proper divisors (198033).

581487 is a wasteful number, since it uses less digits than its factorization.

581487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053.

The product of its digits is 8960, while the sum is 33.

The square root of 581487 is about 762.5529489812. The cubic root of 581487 is about 83.4667179442.

The spelling of 581487 in words is "five hundred eighty-one thousand, four hundred eighty-seven".