275020209 has 12 divisors (see below), whose sum is σ = 397403136. Its totient is φ = 183276792.

The previous prime is 275020201. The next prime is 275020211. The reversal of 275020209 is 902020572.

It is a happy number.

It is not a de Polignac number, because 275020209 - 2³ = 275020201 is a prime.

It is a super-2 number, since 2×275020209² = 151272230716807362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (275020201) 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 11 ways as a sum of consecutive naturals, for example, 31852 + ... + 39554.

It is an arithmetic number, because the mean of its divisors is an integer number (33116928).

Almost surely, 2^275020209 is an apocalyptic number.

It is an amenable number.

275020209 is a deficient number, since it is larger than the sum of its proper divisors (122382927).

275020209 is a wasteful number, since it uses less digits than its factorization.

275020209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11676 (or 11673 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 275020209 is about 16583.7332648593. The cubic root of 275020209 is about 650.3116525219.

The spelling of 275020209 in words is "two hundred seventy-five million, twenty thousand, two hundred nine".