272512321 has 2 divisors, whose sum is σ = 272512322. Its totient is φ = 272512320.

The previous prime is 272512319. The next prime is 272512369. The reversal of 272512321 is 123215272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186022321 + 86490000 = 13639^2 + 9300^2 .

It is a cyclic number.

It is not a de Polignac number, because 272512321 - 2¹ = 272512319 is a prime.

Together with 272512319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (272512301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136256160 + 136256161.

It is an arithmetic number, because the mean of its divisors is an integer number (136256161).

Almost surely, 2^272512321 is an apocalyptic number.

It is an amenable number.

272512321 is a deficient number, since it is larger than the sum of its proper divisors (1).

272512321 is an equidigital number, since it uses as much as digits as its factorization.

272512321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 272512321 is about 16507.9472073302. The cubic root of 272512321 is about 648.3288995202.

Adding to 272512321 its reverse (123215272), we get a palindrome (395727593).

The spelling of 272512321 in words is "two hundred seventy-two million, five hundred twelve thousand, three hundred twenty-one".