493581 has 8 divisors (see below), whose sum is σ = 717984. Its totient is φ = 299120.

The previous prime is 493579. The next prime is 493583. The reversal of 493581 is 185394.

It is an interprime number because it is at equal distance from previous prime (493579) and next prime (493583).

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

It is a cyclic number.

It is not a de Polignac number, because 493581 - 2¹ = 493579 is a prime.

It is a super-2 number, since 2×493581² = 487244407122, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 493581.

It is not an unprimeable number, because it can be changed into a prime (493583) 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, 7446 + ... + 7511.

It is an arithmetic number, because the mean of its divisors is an integer number (89748).

2⁴⁹³⁵⁸¹ is an apocalyptic number.

It is an amenable number.

493581 is a deficient number, since it is larger than the sum of its proper divisors (224403).

493581 is a wasteful number, since it uses less digits than its factorization.

493581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14971.

The product of its digits is 4320, while the sum is 30.

The square root of 493581 is about 702.5532008325. The cubic root of 493581 is about 79.0289377511.

The spelling of 493581 in words is "four hundred ninety-three thousand, five hundred eighty-one".