275216465 has 4 divisors (see below), whose sum is σ = 330259764. Its totient is φ = 220173168.

The previous prime is 275216453. The next prime is 275216483. The reversal of 275216465 is 564612572.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35617024 + 239599441 = 5968^2 + 15479^2 .

It is a cyclic number.

It is not a de Polignac number, because 275216465 - 2⁶ = 275216401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 27521642 + ... + 27521651.

It is an arithmetic number, because the mean of its divisors is an integer number (82564941).

Almost surely, 2^275216465 is an apocalyptic number.

It is an amenable number.

275216465 is a deficient number, since it is larger than the sum of its proper divisors (55043299).

275216465 is an equidigital number, since it uses as much as digits as its factorization.

275216465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55043298.

The product of its digits is 100800, while the sum is 38.

The square root of 275216465 is about 16589.6493332439. The cubic root of 275216465 is about 650.4663044504.

The spelling of 275216465 in words is "two hundred seventy-five million, two hundred sixteen thousand, four hundred sixty-five".