272022721 has 2 divisors, whose sum is σ = 272022722. Its totient is φ = 272022720.

The previous prime is 272022719. The next prime is 272022733. The reversal of 272022721 is 127220272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202066225 + 69956496 = 14215^2 + 8364^2 .

It is a cyclic number.

It is not a de Polignac number, because 272022721 - 2¹ = 272022719 is a prime.

Together with 272022719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (272022701) 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, 136011360 + 136011361.

It is an arithmetic number, because the mean of its divisors is an integer number (136011361).

Almost surely, 2^272022721 is an apocalyptic number.

It is an amenable number.

272022721 is a deficient number, since it is larger than the sum of its proper divisors (1).

272022721 is an equidigital number, since it uses as much as digits as its factorization.

272022721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 272022721 is about 16493.1113195782. Note that the first 3 decimals coincide. The cubic root of 272022721 is about 647.9404007384.

Adding to 272022721 its reverse (127220272), we get a palindrome (399242993).

The spelling of 272022721 in words is "two hundred seventy-two million, twenty-two thousand, seven hundred twenty-one".