491122105 has 16 divisors (see below), whose sum is σ = 636180480. Its totient is φ = 362853568.

The previous prime is 491122087. The next prime is 491122109. The reversal of 491122105 is 501221194.

It is a happy number.

It is not a de Polignac number, because 491122105 - 2⁷ = 491121977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 491122105.

It is not an unprimeable number, because it can be changed into a prime (491122109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70297 + ... + 76966.

It is an arithmetic number, because the mean of its divisors is an integer number (39761280).

Almost surely, 2^491122105 is an apocalyptic number.

It is an amenable number.

491122105 is a deficient number, since it is larger than the sum of its proper divisors (145058375).

491122105 is a wasteful number, since it uses less digits than its factorization.

491122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147320.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 491122105 is about 22161.2748956372. The cubic root of 491122105 is about 788.9748519879.

Adding to 491122105 its reverse (501221194), we get a palindrome (992343299).

The spelling of 491122105 in words is "four hundred ninety-one million, one hundred twenty-two thousand, one hundred five".