549774019 has 2 divisors, whose sum is σ = 549774020. Its totient is φ = 549774018.

The previous prime is 549773969. The next prime is 549774031. The reversal of 549774019 is 910477945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 549774019 - 2⁷ = 549773891 is a prime.

It is a super-2 number, since 2×549774019² = 604502943934824722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 549774019.

It is not a weakly prime, because it can be changed into another prime (549774079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274887009 + 274887010.

It is an arithmetic number, because the mean of its divisors is an integer number (274887010).

Almost surely, 2^549774019 is an apocalyptic number.

549774019 is a deficient number, since it is larger than the sum of its proper divisors (1).

549774019 is an equidigital number, since it uses as much as digits as its factorization.

549774019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 549774019 is about 23447.2603730159. The cubic root of 549774019 is about 819.2090424771.

It can be divided in two parts, 54977 and 4019, that added together give a triangular number (58996 = T₃₄₃).

The spelling of 549774019 in words is "five hundred forty-nine million, seven hundred seventy-four thousand, nineteen".