275663321 has 2 divisors, whose sum is σ = 275663322. Its totient is φ = 275663320.

The previous prime is 275663293. The next prime is 275663341. The reversal of 275663321 is 123366572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238270096 + 37393225 = 15436^2 + 6115^2 .

It is a cyclic number.

It is not a de Polignac number, because 275663321 - 2¹⁸ = 275401177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (275663341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137831660 + 137831661.

It is an arithmetic number, because the mean of its divisors is an integer number (137831661).

Almost surely, 2^275663321 is an apocalyptic number.

It is an amenable number.

275663321 is a deficient number, since it is larger than the sum of its proper divisors (1).

275663321 is an equidigital number, since it uses as much as digits as its factorization.

275663321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 35.

The square root of 275663321 is about 16603.1117866501. Note that the first 3 decimals coincide. The cubic root of 275663321 is about 650.8181579146.

The spelling of 275663321 in words is "two hundred seventy-five million, six hundred sixty-three thousand, three hundred twenty-one".