550047761 has 2 divisors, whose sum is σ = 550047762. Its totient is φ = 550047760.

The previous prime is 550047749. The next prime is 550047781. The reversal of 550047761 is 167740055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539679361 + 10368400 = 23231^2 + 3220^2 .

It is a cyclic number.

It is not a de Polignac number, because 550047761 - 2¹⁸ = 549785617 is a prime.

It is a super-2 number, since 2×550047761² = 605105078762226242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (550047781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275023880 + 275023881.

It is an arithmetic number, because the mean of its divisors is an integer number (275023881).

Almost surely, 2^550047761 is an apocalyptic number.

It is an amenable number.

550047761 is a deficient number, since it is larger than the sum of its proper divisors (1).

550047761 is an equidigital number, since it uses as much as digits as its factorization.

550047761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 550047761 is about 23453.0970449534. The cubic root of 550047761 is about 819.3449860373.

The spelling of 550047761 in words is "five hundred fifty million, forty-seven thousand, seven hundred sixty-one".