549128597 has 2 divisors, whose sum is σ = 549128598. Its totient is φ = 549128596.

The previous prime is 549128561. The next prime is 549128599. The reversal of 549128597 is 795821945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 515789521 + 33339076 = 22711^2 + 5774^2 .

It is a cyclic number.

It is not a de Polignac number, because 549128597 - 2¹⁸ = 548866453 is a prime.

Together with 549128599, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549128599) 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, 274564298 + 274564299.

It is an arithmetic number, because the mean of its divisors is an integer number (274564299).

Almost surely, 2^549128597 is an apocalyptic number.

It is an amenable number.

549128597 is a deficient number, since it is larger than the sum of its proper divisors (1).

549128597 is an equidigital number, since it uses as much as digits as its factorization.

549128597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 50.

The square root of 549128597 is about 23433.4930601479. The cubic root of 549128597 is about 818.8883394469. Note that the first 3 decimals are identical.

The spelling of 549128597 in words is "five hundred forty-nine million, one hundred twenty-eight thousand, five hundred ninety-seven".