275166121 has 2 divisors, whose sum is σ = 275166122. Its totient is φ = 275166120.

The previous prime is 275166091. The next prime is 275166149. The reversal of 275166121 is 121661572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157226521 + 117939600 = 12539^2 + 10860^2 .

It is a cyclic number.

It is not a de Polignac number, because 275166121 - 2¹¹ = 275164073 is a prime.

It is not a weakly prime, because it can be changed into another prime (275166161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137583060 + 137583061.

It is an arithmetic number, because the mean of its divisors is an integer number (137583061).

Almost surely, 2^275166121 is an apocalyptic number.

It is an amenable number.

275166121 is a deficient number, since it is larger than the sum of its proper divisors (1).

275166121 is an equidigital number, since it uses as much as digits as its factorization.

275166121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 31.

The square root of 275166121 is about 16588.1319321978. The cubic root of 275166121 is about 650.4266398267.

The spelling of 275166121 in words is "two hundred seventy-five million, one hundred sixty-six thousand, one hundred twenty-one".