550078901 has 2 divisors, whose sum is σ = 550078902. Its totient is φ = 550078900.

The previous prime is 550078897. The next prime is 550078909. The reversal of 550078901 is 109870055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499299025 + 50779876 = 22345^2 + 7126^2 .

It is a cyclic number.

It is not a de Polignac number, because 550078901 - 2² = 550078897 is a prime.

It is a Sophie Germain 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 (550078909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275039450 + 275039451.

It is an arithmetic number, because the mean of its divisors is an integer number (275039451).

Almost surely, 2^550078901 is an apocalyptic number.

It is an amenable number.

550078901 is a deficient number, since it is larger than the sum of its proper divisors (1).

550078901 is an equidigital number, since it uses as much as digits as its factorization.

550078901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 550078901 is about 23453.7609137639. The cubic root of 550078901 is about 819.3604476773.

The spelling of 550078901 in words is "five hundred fifty million, seventy-eight thousand, nine hundred one".