2126060581 has 2 divisors, whose sum is σ = 2126060582. Its totient is φ = 2126060580.

The previous prime is 2126060551. The next prime is 2126060621. The reversal of 2126060581 is 1850606212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1280995681 + 845064900 = 35791^2 + 29070^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126060581 - 2¹¹ = 2126058533 is a prime.

It is a super-2 number, since 2×2126060581² = 9040267188164115122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2126060501) 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, 1063030290 + 1063030291.

It is an arithmetic number, because the mean of its divisors is an integer number (1063030291).

Almost surely, 2^2126060581 is an apocalyptic number.

It is an amenable number.

2126060581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126060581 is an equidigital number, since it uses as much as digits as its factorization.

2126060581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 2126060581 is about 46109.2244675618. The cubic root of 2126060581 is about 1285.8546462184.

Adding to 2126060581 its reverse (1850606212), we get a palindrome (3976666793).

The spelling of 2126060581 in words is "two billion, one hundred twenty-six million, sixty thousand, five hundred eighty-one".