550777873 has 2 divisors, whose sum is σ = 550777874. Its totient is φ = 550777872.

The previous prime is 550777861. The next prime is 550777879. The reversal of 550777873 is 378777055.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 549761809 + 1016064 = 23447^2 + 1008^2 .

It is a cyclic number.

It is not a de Polignac number, because 550777873 - 2⁹ = 550777361 is a prime.

It is not a weakly prime, because it can be changed into another prime (550777879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275388936 + 275388937.

It is an arithmetic number, because the mean of its divisors is an integer number (275388937).

Almost surely, 2^550777873 is an apocalyptic number.

It is an amenable number.

550777873 is a deficient number, since it is larger than the sum of its proper divisors (1).

550777873 is an equidigital number, since it uses as much as digits as its factorization.

550777873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440600, while the sum is 49.

The square root of 550777873 is about 23468.6572474865. The cubic root of 550777873 is about 819.7073479763.

The spelling of 550777873 in words is "five hundred fifty million, seven hundred seventy-seven thousand, eight hundred seventy-three".