550047749 has 2 divisors, whose sum is σ = 550047750. Its totient is φ = 550047748.

The previous prime is 550047713. The next prime is 550047761. The reversal of 550047749 is 947740055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 508186849 + 41860900 = 22543^2 + 6470^2 .

It is a cyclic number.

It is not a de Polignac number, because 550047749 - 2⁸ = 550047493 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550047649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275023874 + 275023875.

It is an arithmetic number, because the mean of its divisors is an integer number (275023875).

Almost surely, 2^550047749 is an apocalyptic number.

It is an amenable number.

550047749 is a deficient number, since it is larger than the sum of its proper divisors (1).

550047749 is an equidigital number, since it uses as much as digits as its factorization.

550047749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 550047749 is about 23453.0967891236. The cubic root of 550047749 is about 819.3449800790.

The spelling of 550047749 in words is "five hundred fifty million, forty-seven thousand, seven hundred forty-nine".