2055213491 has 2 divisors, whose sum is σ = 2055213492. Its totient is φ = 2055213490.

The previous prime is 2055213481. The next prime is 2055213571. The reversal of 2055213491 is 1943125502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2055213491 - 2⁶ = 2055213427 is a prime.

It is not a weakly prime, because it can be changed into another prime (2055213431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027606745 + 1027606746.

It is an arithmetic number, because the mean of its divisors is an integer number (1027606746).

Almost surely, 2^2055213491 is an apocalyptic number.

2055213491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2055213491 is an equidigital number, since it uses as much as digits as its factorization.

2055213491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 2055213491 is about 45334.4625092214. The cubic root of 2055213491 is about 1271.4100714588.

Adding to 2055213491 its reverse (1943125502), we get a palindrome (3998338993).

It can be divided in two parts, 20552 and 13491, that added together give a palindrome (34043).

The spelling of 2055213491 in words is "two billion, fifty-five million, two hundred thirteen thousand, four hundred ninety-one".