491532 has 12 divisors (see below), whose sum is σ = 1146936. Its totient is φ = 163840.

The previous prime is 491531. The next prime is 491537. The reversal of 491532 is 235194.

It is a tau number, because it is divible by the number of its divisors (12).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (491531) 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, 20469 + ... + 20492.

It is an arithmetic number, because the mean of its divisors is an integer number (95578).

2⁴⁹¹⁵³² is an apocalyptic number.

It is an amenable number.

491532 is an abundant number, since it is smaller than the sum of its proper divisors (655404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491532 is a wasteful number, since it uses less digits than its factorization.

491532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40968 (or 40966 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 491532 is about 701.0934317193. The cubic root of 491532 is about 78.9194286161.

The spelling of 491532 in words is "four hundred ninety-one thousand, five hundred thirty-two".