550554997 has 2 divisors, whose sum is σ = 550554998. Its totient is φ = 550554996.

The previous prime is 550554989. The next prime is 550555003. The reversal of 550554997 is 799455055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 530565156 + 19989841 = 23034^2 + 4471^2 .

It is a cyclic number.

It is not a de Polignac number, because 550554997 - 2³ = 550554989 is a prime.

It is a super-2 number, since 2×550554997² = 606221609443340018, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550554997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550552997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275277498 + 275277499.

It is an arithmetic number, because the mean of its divisors is an integer number (275277499).

Almost surely, 2^550554997 is an apocalyptic number.

It is an amenable number.

550554997 is a deficient number, since it is larger than the sum of its proper divisors (1).

550554997 is an equidigital number, since it uses as much as digits as its factorization.

550554997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1417500, while the sum is 49.

The square root of 550554997 is about 23463.9083913998. The cubic root of 550554997 is about 819.5967663474.

The spelling of 550554997 in words is "five hundred fifty million, five hundred fifty-four thousand, nine hundred ninety-seven".