549623 has 2 divisors, whose sum is σ = 549624. Its totient is φ = 549622.

The previous prime is 549607. The next prime is 549641. The reversal of 549623 is 326945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 549623 - 2⁴ = 549607 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 5³ + 4⁹ + 6⁷ + 9³ + 2⁷ + 3⁸ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549623.

It is not a weakly prime, because it can be changed into another prime (549643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274811 + 274812.

It is an arithmetic number, because the mean of its divisors is an integer number (274812).

2⁵⁴⁹⁶²³ is an apocalyptic number.

549623 is a deficient number, since it is larger than the sum of its proper divisors (1).

549623 is an equidigital number, since it uses as much as digits as its factorization.

549623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 29.

The square root of 549623 is about 741.3656317904. The cubic root of 549623 is about 81.9134025315.

The spelling of 549623 in words is "five hundred forty-nine thousand, six hundred twenty-three".