491755 has 8 divisors (see below), whose sum is σ = 643824. Its totient is φ = 357600.

The previous prime is 491747. The next prime is 491773. The reversal of 491755 is 557194.

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

It is not a de Polignac number, because 491755 - 2³ = 491747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4416 + ... + 4525.

It is an arithmetic number, because the mean of its divisors is an integer number (80478).

2⁴⁹¹⁷⁵⁵ is an apocalyptic number.

491755 is a deficient number, since it is larger than the sum of its proper divisors (152069).

491755 is a wasteful number, since it uses less digits than its factorization.

491755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957.

The product of its digits is 6300, while the sum is 31.

The square root of 491755 is about 701.2524509761. The cubic root of 491755 is about 78.9313616281.

The spelling of 491755 in words is "four hundred ninety-one thousand, seven hundred fifty-five".