2055172489 has 2 divisors, whose sum is σ = 2055172490. Its totient is φ = 2055172488.

The previous prime is 2055172481. The next prime is 2055172499. The reversal of 2055172489 is 9842715502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1373962489 + 681210000 = 37067^2 + 26100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2055172489 - 2³ = 2055172481 is a prime.

It is not a weakly prime, because it can be changed into another prime (2055172481) 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, 1027586244 + 1027586245.

It is an arithmetic number, because the mean of its divisors is an integer number (1027586245).

Almost surely, 2^2055172489 is an apocalyptic number.

It is an amenable number.

2055172489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2055172489 is an equidigital number, since it uses as much as digits as its factorization.

2055172489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 2055172489 is about 45334.0102902887. The cubic root of 2055172489 is about 1271.4016164244.

The spelling of 2055172489 in words is "two billion, fifty-five million, one hundred seventy-two thousand, four hundred eighty-nine".