551183948069 has 2 divisors, whose sum is σ = 551183948070. Its totient is φ = 551183948068.

The previous prime is 551183948039. The next prime is 551183948087. The reversal of 551183948069 is 960849381155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406450876225 + 144733071844 = 637535^2 + 380438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551183948069 is a prime.

It is a super-2 number, since 2×551183948069² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 551183947999 and 551183948017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551183948039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275591974034 + 275591974035.

It is an arithmetic number, because the mean of its divisors is an integer number (275591974035).

Almost surely, 2^551183948069 is an apocalyptic number.

It is an amenable number.

551183948069 is a deficient number, since it is larger than the sum of its proper divisors (1).

551183948069 is an equidigital number, since it uses as much as digits as its factorization.

551183948069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9331200, while the sum is 59.

The spelling of 551183948069 in words is "five hundred fifty-one billion, one hundred eighty-three million, nine hundred forty-eight thousand, sixty-nine".