100106491 has 2 divisors, whose sum is σ = 100106492. Its totient is φ = 100106490.

The previous prime is 100106483. The next prime is 100106519. The reversal of 100106491 is 194601001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100106491 - 2³ = 100106483 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100106441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50053245 + 50053246.

It is an arithmetic number, because the mean of its divisors is an integer number (50053246).

Almost surely, 2^100106491 is an apocalyptic number.

100106491 is a deficient number, since it is larger than the sum of its proper divisors (1).

100106491 is an equidigital number, since it uses as much as digits as its factorization.

100106491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 100106491 is about 10005.3231332126. The cubic root of 100106491 is about 464.3235873889.

Adding to 100106491 its reverse (194601001), we get a palindrome (294707492).

The spelling of 100106491 in words is "one hundred million, one hundred six thousand, four hundred ninety-one".