5491973 has 2 divisors, whose sum is σ = 5491974. Its totient is φ = 5491972.

The previous prime is 5491961. The next prime is 5491979. The reversal of 5491973 is 3791945.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3467044 + 2024929 = 1862^2 + 1423^2 .

It is a cyclic number.

It is not a de Polignac number, because 5491973 - 2⁴ = 5491957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5491979) 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, 2745986 + 2745987.

It is an arithmetic number, because the mean of its divisors is an integer number (2745987).

Almost surely, 2^5491973 is an apocalyptic number.

It is an amenable number.

5491973 is a deficient number, since it is larger than the sum of its proper divisors (1).

5491973 is an equidigital number, since it uses as much as digits as its factorization.

5491973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 38.

The square root of 5491973 is about 2343.4958928916. The cubic root of 5491973 is about 176.4315019077.

The spelling of 5491973 in words is "five million, four hundred ninety-one thousand, nine hundred seventy-three".