275027985 has 24 divisors (see below), whose sum is σ = 481178880. Its totient is φ = 145308192.

The previous prime is 275027981. The next prime is 275027999. The reversal of 275027985 is 589720572.

It is a happy number.

It is not a de Polignac number, because 275027985 - 2² = 275027981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 275027985.

It is not an unprimeable number, because it can be changed into a prime (275027981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23745 + ... + 33374.

It is an arithmetic number, because the mean of its divisors is an integer number (20049120).

Almost surely, 2^275027985 is an apocalyptic number.

It is an amenable number.

275027985 is a deficient number, since it is larger than the sum of its proper divisors (206150895).

275027985 is a wasteful number, since it uses less digits than its factorization.

275027985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57237 (or 57234 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The square root of 275027985 is about 16583.9677098094. The cubic root of 275027985 is about 650.3177814966.

The spelling of 275027985 in words is "two hundred seventy-five million, twenty-seven thousand, nine hundred eighty-five".