4991101 has 2 divisors, whose sum is σ = 4991102. Its totient is φ = 4991100.

The previous prime is 4991033. The next prime is 4991123. The reversal of 4991101 is 1011994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3059001 + 1932100 = 1749^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 4991101 - 2⁹ = 4990589 is a prime.

It is a super-2 number, since 2×4991101² = 49822178384402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4991131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495550 + 2495551.

It is an arithmetic number, because the mean of its divisors is an integer number (2495551).

Almost surely, 2^4991101 is an apocalyptic number.

It is an amenable number.

4991101 is a deficient number, since it is larger than the sum of its proper divisors (1).

4991101 is an equidigital number, since it uses as much as digits as its factorization.

4991101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 4991101 is about 2234.0772144221. The cubic root of 4991101 is about 170.8960872499.

It can be divided in two parts, 499 and 1101, that added together give a square (1600 = 40²).

The spelling of 4991101 in words is "four million, nine hundred ninety-one thousand, one hundred one".