549095891 has 2 divisors, whose sum is σ = 549095892. Its totient is φ = 549095890.

The previous prime is 549095881. The next prime is 549095917. The reversal of 549095891 is 198590945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 549095891 - 2¹⁰ = 549094867 is a prime.

It is a super-3 number, since 3×549095891³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (549095881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274547945 + 274547946.

It is an arithmetic number, because the mean of its divisors is an integer number (274547946).

Almost surely, 2^549095891 is an apocalyptic number.

549095891 is a deficient number, since it is larger than the sum of its proper divisors (1).

549095891 is an equidigital number, since it uses as much as digits as its factorization.

549095891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 50.

The square root of 549095891 is about 23432.7952024508. The cubic root of 549095891 is about 818.8720815103.

The spelling of 549095891 in words is "five hundred forty-nine million, ninety-five thousand, eight hundred ninety-one".