275397189 has 4 divisors (see below), whose sum is σ = 367196256. Its totient is φ = 183598124.

The previous prime is 275397173. The next prime is 275397197. The reversal of 275397189 is 981793572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 275397189 - 2⁴ = 275397173 is a prime.

It is a super-2 number, since 2×275397189² = 151687223418203442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275397389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45899529 + ... + 45899534.

It is an arithmetic number, because the mean of its divisors is an integer number (91799064).

Almost surely, 2^275397189 is an apocalyptic number.

It is an amenable number.

275397189 is a deficient number, since it is larger than the sum of its proper divisors (91799067).

275397189 is an equidigital number, since it uses as much as digits as its factorization.

275397189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91799066.

The product of its digits is 952560, while the sum is 51.

The square root of 275397189 is about 16595.0953296448. The cubic root of 275397189 is about 650.6086519786.

The spelling of 275397189 in words is "two hundred seventy-five million, three hundred ninety-seven thousand, one hundred eighty-nine".