275402891 has 4 divisors (see below), whose sum is σ = 289897800. Its totient is φ = 260907984.

The previous prime is 275402849. The next prime is 275402921. The reversal of 275402891 is 198204572.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 275402891 - 2²⁶ = 208294027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275402191) 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 3 ways as a sum of consecutive naturals, for example, 7247426 + ... + 7247463.

It is an arithmetic number, because the mean of its divisors is an integer number (72474450).

Almost surely, 2^275402891 is an apocalyptic number.

275402891 is a deficient number, since it is larger than the sum of its proper divisors (14494909).

275402891 is a wasteful number, since it uses less digits than its factorization.

275402891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14494908.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 275402891 is about 16595.2671265033. The cubic root of 275402891 is about 650.6131421539.

The spelling of 275402891 in words is "two hundred seventy-five million, four hundred two thousand, eight hundred ninety-one".