2055551669 has 2 divisors, whose sum is σ = 2055551670. Its totient is φ = 2055551668.

The previous prime is 2055551623. The next prime is 2055551671. The reversal of 2055551669 is 9661555502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2055262225 + 289444 = 45335^2 + 538^2 .

It is a cyclic number.

It is not a de Polignac number, because 2055551669 - 2¹² = 2055547573 is a prime.

It is a super-2 number, since 2×2055551669² = 8450585327857371122, which contains 22 as substring.

Together with 2055551671, 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 (2055551609) 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, 1027775834 + 1027775835.

It is an arithmetic number, because the mean of its divisors is an integer number (1027775835).

Almost surely, 2^2055551669 is an apocalyptic number.

It is an amenable number.

2055551669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2055551669 is an equidigital number, since it uses as much as digits as its factorization.

2055551669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405000, while the sum is 44.

The square root of 2055551669 is about 45338.1921673108. The cubic root of 2055551669 is about 1271.4798029548.

The spelling of 2055551669 in words is "two billion, fifty-five million, five hundred fifty-one thousand, six hundred sixty-nine".