272847521 has 2 divisors, whose sum is σ = 272847522. Its totient is φ = 272847520.

The previous prime is 272847503. The next prime is 272847529. The reversal of 272847521 is 125748272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271887121 + 960400 = 16489^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 272847521 - 2¹⁴ = 272831137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (272847529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136423760 + 136423761.

It is an arithmetic number, because the mean of its divisors is an integer number (136423761).

Almost surely, 2^272847521 is an apocalyptic number.

It is an amenable number.

272847521 is a deficient number, since it is larger than the sum of its proper divisors (1).

272847521 is an equidigital number, since it uses as much as digits as its factorization.

272847521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62720, while the sum is 38.

The square root of 272847521 is about 16518.0967729336. The cubic root of 272847521 is about 648.5946132604.

The spelling of 272847521 in words is "two hundred seventy-two million, eight hundred forty-seven thousand, five hundred twenty-one".