491168552 has 48 divisors (see below), whose sum is σ = 1078011360. Its totient is φ = 209182176.

The previous prime is 491168551. The next prime is 491168567. The reversal of 491168552 is 255861194.

It is not an unprimeable number, because it can be changed into a prime (491168551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60053 + ... + 67739.

It is an arithmetic number, because the mean of its divisors is an integer number (22458570).

Almost surely, 2^491168552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491168552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539005680).

491168552 is an abundant number, since it is smaller than the sum of its proper divisors (586842808).

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

491168552 is a wasteful number, since it uses less digits than its factorization.

491168552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7870 (or 7859 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 491168552 is about 22162.3228024501. The cubic root of 491168552 is about 788.9997231685. Note that the first 3 decimals are identical.

The spelling of 491168552 in words is "four hundred ninety-one million, one hundred sixty-eight thousand, five hundred fifty-two".