275961985 has 32 divisors (see below), whose sum is σ = 376992000. Its totient is φ = 192243456.

The previous prime is 275961979. The next prime is 275962007. The reversal of 275961985 is 589169572.

It is a cyclic number.

It is not a de Polignac number, because 275961985 - 2²³ = 267573377 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 541911 + ... + 542419.

It is an arithmetic number, because the mean of its divisors is an integer number (11781000).

Almost surely, 2^275961985 is an apocalyptic number.

It is an amenable number.

275961985 is a deficient number, since it is larger than the sum of its proper divisors (101030015).

275961985 is a wasteful number, since it uses less digits than its factorization.

275961985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985.

The product of its digits is 1360800, while the sum is 52.

The square root of 275961985 is about 16612.1035693858. The cubic root of 275961985 is about 651.0531133640.

The spelling of 275961985 in words is "two hundred seventy-five million, nine hundred sixty-one thousand, nine hundred eighty-five".