551016601 has 2 divisors, whose sum is σ = 551016602. Its totient is φ = 551016600.

The previous prime is 551016581. The next prime is 551016619. The reversal of 551016601 is 106610155.

551016601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334926601 + 216090000 = 18301^2 + 14700^2 .

It is a cyclic number.

It is not a de Polignac number, because 551016601 - 2¹⁵ = 550983833 is a prime.

It is not a weakly prime, because it can be changed into another prime (551016901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275508300 + 275508301.

It is an arithmetic number, because the mean of its divisors is an integer number (275508301).

Almost surely, 2^551016601 is an apocalyptic number.

It is an amenable number.

551016601 is a deficient number, since it is larger than the sum of its proper divisors (1).

551016601 is an equidigital number, since it uses as much as digits as its factorization.

551016601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 551016601 is about 23473.7427991362. The cubic root of 551016601 is about 819.8257616112.

Adding to 551016601 its reverse (106610155), we get a palindrome (657626756).

The spelling of 551016601 in words is "five hundred fifty-one million, sixteen thousand, six hundred one".