275855189 has 2 divisors, whose sum is σ = 275855190. Its totient is φ = 275855188.

The previous prime is 275855131. The next prime is 275855197. The reversal of 275855189 is 981558572.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195160900 + 80694289 = 13970^2 + 8983^2 .

It is a cyclic number.

It is not a de Polignac number, because 275855189 - 2¹⁶ = 275789653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275855119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137927594 + 137927595.

It is an arithmetic number, because the mean of its divisors is an integer number (137927595).

Almost surely, 2^275855189 is an apocalyptic number.

It is an amenable number.

275855189 is a deficient number, since it is larger than the sum of its proper divisors (1).

275855189 is an equidigital number, since it uses as much as digits as its factorization.

275855189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008000, while the sum is 50.

The square root of 275855189 is about 16608.8888550679. Note that the first 4 decimals coincide. The cubic root of 275855189 is about 650.9691176892.

The spelling of 275855189 in words is "two hundred seventy-five million, eight hundred fifty-five thousand, one hundred eighty-nine".