549380077 has 2 divisors, whose sum is σ = 549380078. Its totient is φ = 549380076.

The previous prime is 549380053. The next prime is 549380081. The reversal of 549380077 is 770083945.

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., 544335561 + 5044516 = 23331^2 + 2246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549380077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549380017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274690038 + 274690039.

It is an arithmetic number, because the mean of its divisors is an integer number (274690039).

Almost surely, 2^549380077 is an apocalyptic number.

It is an amenable number.

549380077 is a deficient number, since it is larger than the sum of its proper divisors (1).

549380077 is an equidigital number, since it uses as much as digits as its factorization.

549380077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 549380077 is about 23438.8582699755. The cubic root of 549380077 is about 819.0133269344.

The spelling of 549380077 in words is "five hundred forty-nine million, three hundred eighty thousand, seventy-seven".