491382522 has 48 divisors (see below), whose sum is σ = 1124878560. Its totient is φ = 154594656.

The previous prime is 491382487. The next prime is 491382523. The reversal of 491382522 is 225283194.

It is a happy number.

491382522 is a `hidden beast` number, since 49 + 13 + 82 + 522 = 666.

It is not an unprimeable number, because it can be changed into a prime (491382523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94248 + ... + 99324.

It is an arithmetic number, because the mean of its divisors is an integer number (23434970).

Almost surely, 2^491382522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491382522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562439280).

491382522 is an abundant number, since it is smaller than the sum of its proper divisors (633496038).

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

491382522 is a wasteful number, since it uses less digits than its factorization.

491382522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387 (or 5384 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 491382522 is about 22167.1496137866. The cubic root of 491382522 is about 789.1142783866.

The spelling of 491382522 in words is "four hundred ninety-one million, three hundred eighty-two thousand, five hundred twenty-two".