491722 has 32 divisors (see below), whose sum is σ = 958464. Its totient is φ = 183600.

The previous prime is 491719. The next prime is 491731. The reversal of 491722 is 227194.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4723 + ... + 4825.

It is an arithmetic number, because the mean of its divisors is an integer number (29952).

2⁴⁹¹⁷²² is an apocalyptic number.

491722 is a deficient number, since it is larger than the sum of its proper divisors (466742).

491722 is a wasteful number, since it uses less digits than its factorization.

491722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154.

The product of its digits is 1008, while the sum is 25.

The square root of 491722 is about 701.2289212518. The cubic root of 491722 is about 78.9295959838.

It can be divided in two parts, 49 and 1722, that added together give a palindrome (1771).

The spelling of 491722 in words is "four hundred ninety-one thousand, seven hundred twenty-two".