2020005551 has 2 divisors, whose sum is σ = 2020005552. Its totient is φ = 2020005550.

The previous prime is 2020005511. The next prime is 2020005553. The reversal of 2020005551 is 1555000202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2020005551 - 2⁶ = 2020005487 is a prime.

Together with 2020005553, 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 (2020005553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010002775 + 1010002776.

It is an arithmetic number, because the mean of its divisors is an integer number (1010002776).

Almost surely, 2^2020005551 is an apocalyptic number.

2020005551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020005551 is an equidigital number, since it uses as much as digits as its factorization.

2020005551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 2020005551 is about 44944.4718625105. The cubic root of 2020005551 is about 1264.1080227924.

Adding to 2020005551 its reverse (1555000202), we get a palindrome (3575005753).

The spelling of 2020005551 in words is "two billion, twenty million, five thousand, five hundred fifty-one".