550505489 has 2 divisors, whose sum is σ = 550505490. Its totient is φ = 550505488.

The previous prime is 550505453. The next prime is 550505497. The reversal of 550505489 is 984505055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331968400 + 218537089 = 18220^2 + 14783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550505489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (550505429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275252744 + 275252745.

It is an arithmetic number, because the mean of its divisors is an integer number (275252745).

Almost surely, 2^550505489 is an apocalyptic number.

It is an amenable number.

550505489 is a deficient number, since it is larger than the sum of its proper divisors (1).

550505489 is an equidigital number, since it uses as much as digits as its factorization.

550505489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 41.

The square root of 550505489 is about 23462.8533857244. The cubic root of 550505489 is about 819.5721985245.

The spelling of 550505489 in words is "five hundred fifty million, five hundred five thousand, four hundred eighty-nine".