275460409 has 9 divisors (see below), whose sum is σ = 320568741. Its totient is φ = 236009340.

The previous prime is 275460379. The next prime is 275460421. The reversal of 275460409 is 904064572.

The square root of 275460409 is 16597.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 275460409 - 2¹⁵ = 275427641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275460109) 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 in 8 ways as a sum of consecutive naturals, for example, 114994 + ... + 117364.

It is an arithmetic number, because the mean of its divisors is an integer number (35618749).

Almost surely, 2^275460409 is an apocalyptic number.

275460409 is the 16597-th square number.

275460409 is the 8299-th centered octagonal number.

It is an amenable number.

275460409 is a deficient number, since it is larger than the sum of its proper divisors (45108332).

275460409 is an frugal number, since it uses more digits than its factorization.

275460409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4756 (or 2378 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The cubic root of 275460409 is about 650.6584326029.

The spelling of 275460409 in words is "two hundred seventy-five million, four hundred sixty thousand, four hundred nine".