498581 has 4 divisors (see below), whose sum is σ = 504672. Its totient is φ = 492492.

The previous prime is 498577. The next prime is 498583. The reversal of 498581 is 185894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 498581 - 2² = 498577 is a prime.

It is a super-2 number, since 2×498581² = 497166027122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

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 498581.

It is not an unprimeable number, because it can be changed into a prime (498583) 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, 2921 + ... + 3086.

It is an arithmetic number, because the mean of its divisors is an integer number (126168).

2⁴⁹⁸⁵⁸¹ is an apocalyptic number.

It is an amenable number.

498581 is a deficient number, since it is larger than the sum of its proper divisors (6091).

498581 is an equidigital number, since it uses as much as digits as its factorization.

498581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090.

The product of its digits is 11520, while the sum is 35.

The square root of 498581 is about 706.1026837507. The cubic root of 498581 is about 79.2948973869.

The spelling of 498581 in words is "four hundred ninety-eight thousand, five hundred eighty-one".