2055521887 has 2 divisors, whose sum is σ = 2055521888. Its totient is φ = 2055521886.

The previous prime is 2055521873. The next prime is 2055521893. The reversal of 2055521887 is 7881255502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2055521887 - 2⁷ = 2055521759 is a prime.

It is a super-3 number, since 3×2055521887³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2055521857) 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, 1027760943 + 1027760944.

It is an arithmetic number, because the mean of its divisors is an integer number (1027760944).

Almost surely, 2^2055521887 is an apocalyptic number.

2055521887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2055521887 is an equidigital number, since it uses as much as digits as its factorization.

2055521887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224000, while the sum is 43.

The square root of 2055521887 is about 45337.8637233825. The cubic root of 2055521887 is about 1271.4736622847.

The spelling of 2055521887 in words is "two billion, fifty-five million, five hundred twenty-one thousand, eight hundred eighty-seven".