2722910081 has 4 divisors (see below), whose sum is σ = 2789322564. Its totient is φ = 2656497600.

The previous prime is 2722910051. The next prime is 2722910087. The reversal of 2722910081 is 1800192272.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 222010000 + 2500900081 = 14900^2 + 50009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2722910081 is a prime.

It is a super-2 number, since 2×2722910081² = 14828478618422853122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2722910087) 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 in 3 ways as a sum of consecutive naturals, for example, 33206180 + ... + 33206261.

It is an arithmetic number, because the mean of its divisors is an integer number (697330641).

Almost surely, 2^2722910081 is an apocalyptic number.

It is an amenable number.

2722910081 is a deficient number, since it is larger than the sum of its proper divisors (66412483).

2722910081 is an equidigital number, since it uses as much as digits as its factorization.

2722910081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66412482.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 2722910081 is about 52181.5109114330. The cubic root of 2722910081 is about 1396.4040506670.

The spelling of 2722910081 in words is "two billion, seven hundred twenty-two million, nine hundred ten thousand, eighty-one".