549875791 has 2 divisors, whose sum is σ = 549875792. Its totient is φ = 549875790.

The previous prime is 549875783. The next prime is 549875801. The reversal of 549875791 is 197578945.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 549875791 - 2³ = 549875783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549870791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274937895 + 274937896.

It is an arithmetic number, because the mean of its divisors is an integer number (274937896).

Almost surely, 2^549875791 is an apocalyptic number.

549875791 is a deficient number, since it is larger than the sum of its proper divisors (1).

549875791 is an equidigital number, since it uses as much as digits as its factorization.

549875791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 55.

The square root of 549875791 is about 23449.4305048118. The cubic root of 549875791 is about 819.2595889416.

The spelling of 549875791 in words is "five hundred forty-nine million, eight hundred seventy-five thousand, seven hundred ninety-one".