550778057 has 2 divisors, whose sum is σ = 550778058. Its totient is φ = 550778056.

The previous prime is 550777999. The next prime is 550778077. The reversal of 550778057 is 750877055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438651136 + 112126921 = 20944^2 + 10589^2 .

It is a cyclic number.

It is not a de Polignac number, because 550778057 - 2¹⁶ = 550712521 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 550777999 and 550778017.

It is not a weakly prime, because it can be changed into another prime (550778077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275389028 + 275389029.

It is an arithmetic number, because the mean of its divisors is an integer number (275389029).

Almost surely, 2^550778057 is an apocalyptic number.

It is an amenable number.

550778057 is a deficient number, since it is larger than the sum of its proper divisors (1).

550778057 is an equidigital number, since it uses as much as digits as its factorization.

550778057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 343000, while the sum is 44.

The square root of 550778057 is about 23468.6611676082. The cubic root of 550778057 is about 819.7074392570.

The spelling of 550778057 in words is "five hundred fifty million, seven hundred seventy-eight thousand, fifty-seven".