550767509 has 2 divisors, whose sum is σ = 550767510. Its totient is φ = 550767508.

The previous prime is 550767493. The next prime is 550767527. The reversal of 550767509 is 905767055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314069284 + 236698225 = 17722^2 + 15385^2 .

It is a cyclic number.

It is not a de Polignac number, because 550767509 - 2⁴ = 550767493 is a prime.

It is equal to p_28883627 and since 550767509 and 28883627 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550767509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550767589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275383754 + 275383755.

It is an arithmetic number, because the mean of its divisors is an integer number (275383755).

Almost surely, 2^550767509 is an apocalyptic number.

It is an amenable number.

550767509 is a deficient number, since it is larger than the sum of its proper divisors (1).

550767509 is an equidigital number, since it uses as much as digits as its factorization.

550767509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 330750, while the sum is 44.

The square root of 550767509 is about 23468.4364413141. The cubic root of 550767509 is about 819.7022064600.

The spelling of 550767509 in words is "five hundred fifty million, seven hundred sixty-seven thousand, five hundred nine".