2050568581 has 2 divisors, whose sum is σ = 2050568582. Its totient is φ = 2050568580.

The previous prime is 2050568579. The next prime is 2050568591. The reversal of 2050568581 is 1858650502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1037419681 + 1013148900 = 32209^2 + 31830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2050568581 - 2¹ = 2050568579 is a prime.

It is a super-2 number, since 2×2050568581² = 8409663010768707122, which contains 22 as substring.

Together with 2050568579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2050568591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025284290 + 1025284291.

It is an arithmetic number, because the mean of its divisors is an integer number (1025284291).

Almost surely, 2^2050568581 is an apocalyptic number.

It is an amenable number.

2050568581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2050568581 is an equidigital number, since it uses as much as digits as its factorization.

2050568581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96000, while the sum is 40.

The square root of 2050568581 is about 45283.2041821247. The cubic root of 2050568581 is about 1270.4515270915.

The spelling of 2050568581 in words is "two billion, fifty million, five hundred sixty-eight thousand, five hundred eighty-one".