491554 has 8 divisors (see below), whose sum is σ = 842688. Its totient is φ = 210660.

The previous prime is 491539. The next prime is 491581. The reversal of 491554 is 455194.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17542 + ... + 17569.

It is an arithmetic number, because the mean of its divisors is an integer number (105336).

2⁴⁹¹⁵⁵⁴ is an apocalyptic number.

491554 is a deficient number, since it is larger than the sum of its proper divisors (351134).

491554 is a wasteful number, since it uses less digits than its factorization.

491554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35120.

The product of its digits is 3600, while the sum is 28.

The square root of 491554 is about 701.1091213214. The cubic root of 491554 is about 78.9206060243.

The spelling of 491554 in words is "four hundred ninety-one thousand, five hundred fifty-four".