275012409 has 16 divisors (see below), whose sum is σ = 419349888. Its totient is φ = 157043712.

The previous prime is 275012401. The next prime is 275012411. The reversal of 275012409 is 904210572.

It is not a de Polignac number, because 275012409 - 2³ = 275012401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (275012401) 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 15 ways as a sum of consecutive naturals, for example, 35929 + ... + 42905.

It is an arithmetic number, because the mean of its divisors is an integer number (26209368).

Almost surely, 2^275012409 is an apocalyptic number.

It is an amenable number.

275012409 is a deficient number, since it is larger than the sum of its proper divisors (144337479).

275012409 is a wasteful number, since it uses less digits than its factorization.

275012409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 275012409 is about 16583.4980929839. The cubic root of 275012409 is about 650.3055045145.

The spelling of 275012409 in words is "two hundred seventy-five million, twelve thousand, four hundred nine".