549278941 has 2 divisors, whose sum is σ = 549278942. Its totient is φ = 549278940.

The previous prime is 549278929. The next prime is 549278957. The reversal of 549278941 is 149872945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423166041 + 126112900 = 20571^2 + 11230^2 .

It is a cyclic number.

It is not a de Polignac number, because 549278941 - 2⁷ = 549278813 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a pancake number, because a pancake can be divided into 549278941 parts by 33144 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549278981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274639470 + 274639471.

It is an arithmetic number, because the mean of its divisors is an integer number (274639471).

Almost surely, 2^549278941 is an apocalyptic number.

It is an amenable number.

549278941 is a deficient number, since it is larger than the sum of its proper divisors (1).

549278941 is an equidigital number, since it uses as much as digits as its factorization.

549278941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 49.

The square root of 549278941 is about 23436.7007277048. The cubic root of 549278941 is about 818.9630661534.

The spelling of 549278941 in words is "five hundred forty-nine million, two hundred seventy-eight thousand, nine hundred forty-one".