272732021 has 2 divisors, whose sum is σ = 272732022. Its totient is φ = 272732020.

The previous prime is 272731993. The next prime is 272732027. The reversal of 272732021 is 120237272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174504100 + 98227921 = 13210^2 + 9911^2 .

It is a cyclic number.

It is not a de Polignac number, because 272732021 - 2⁶ = 272731957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272732027) 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, 136366010 + 136366011.

It is an arithmetic number, because the mean of its divisors is an integer number (136366011).

Almost surely, 2^272732021 is an apocalyptic number.

It is an amenable number.

272732021 is a deficient number, since it is larger than the sum of its proper divisors (1).

272732021 is an equidigital number, since it uses as much as digits as its factorization.

272732021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 272732021 is about 16514.6002373657. The cubic root of 272732021 is about 648.5030807559.

Adding to 272732021 its reverse (120237272), we get a palindrome (392969293).

The spelling of 272732021 in words is "two hundred seventy-two million, seven hundred thirty-two thousand, twenty-one".