275649285 has 16 divisors (see below), whose sum is σ = 441650304. Its totient is φ = 146809152.

The previous prime is 275649277. The next prime is 275649289. The reversal of 275649285 is 582946572.

It is not a de Polignac number, because 275649285 - 2³ = 275649277 is a prime.

It is a super-2 number, since 2×275649285² = 151965056642022450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275649289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1222 + ... + 23511.

It is an arithmetic number, because the mean of its divisors is an integer number (27603144).

Almost surely, 2^275649285 is an apocalyptic number.

It is an amenable number.

275649285 is a deficient number, since it is larger than the sum of its proper divisors (166001019).

275649285 is a wasteful number, since it uses less digits than its factorization.

275649285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25484.

The product of its digits is 1209600, while the sum is 48.

The square root of 275649285 is about 16602.6890894216. The cubic root of 275649285 is about 650.8071117845.

The spelling of 275649285 in words is "two hundred seventy-five million, six hundred forty-nine thousand, two hundred eighty-five".