549863143 has 2 divisors, whose sum is σ = 549863144. Its totient is φ = 549863142.

The previous prime is 549863129. The next prime is 549863189. The reversal of 549863143 is 341368945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 549863143 - 2²⁵ = 516308711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 549863143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549863443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274931571 + 274931572.

It is an arithmetic number, because the mean of its divisors is an integer number (274931572).

Almost surely, 2^549863143 is an apocalyptic number.

549863143 is a deficient number, since it is larger than the sum of its proper divisors (1).

549863143 is an equidigital number, since it uses as much as digits as its factorization.

549863143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 43.

The square root of 549863143 is about 23449.1608165410. The cubic root of 549863143 is about 819.2533074777.

The spelling of 549863143 in words is "five hundred forty-nine million, eight hundred sixty-three thousand, one hundred forty-three".