549411901 has 2 divisors, whose sum is σ = 549411902. Its totient is φ = 549411900.

The previous prime is 549411893. The next prime is 549411979. The reversal of 549411901 is 109114945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 445167801 + 104244100 = 21099^2 + 10210^2 .

It is a cyclic number.

It is not a de Polignac number, because 549411901 - 2³ = 549411893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549411001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274705950 + 274705951.

It is an arithmetic number, because the mean of its divisors is an integer number (274705951).

Almost surely, 2^549411901 is an apocalyptic number.

It is an amenable number.

549411901 is a deficient number, since it is larger than the sum of its proper divisors (1).

549411901 is an equidigital number, since it uses as much as digits as its factorization.

549411901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 549411901 is about 23439.5371328019. The cubic root of 549411901 is about 819.0291409874.

The spelling of 549411901 in words is "five hundred forty-nine million, four hundred eleven thousand, nine hundred one".