275138085 has 32 divisors (see below), whose sum is σ = 452309760. Its totient is φ = 142732800.

The previous prime is 275138077. The next prime is 275138099. The reversal of 275138085 is 580831572.

It is not a de Polignac number, because 275138085 - 2³ = 275138077 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

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, 387711 + ... + 388419.

It is an arithmetic number, because the mean of its divisors is an integer number (14134680).

Almost surely, 2^275138085 is an apocalyptic number.

It is an amenable number.

275138085 is a deficient number, since it is larger than the sum of its proper divisors (177171675).

275138085 is a wasteful number, since it uses less digits than its factorization.

275138085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 275138085 is about 16587.2868486682. The cubic root of 275138085 is about 650.4045489523.

The spelling of 275138085 in words is "two hundred seventy-five million, one hundred thirty-eight thousand, eighty-five".