275525161 has 2 divisors, whose sum is σ = 275525162. Its totient is φ = 275525160.

The previous prime is 275525153. The next prime is 275525177. The reversal of 275525161 is 161525572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194435136 + 81090025 = 13944^2 + 9005^2 .

It is a cyclic number.

It is not a de Polignac number, because 275525161 - 2³ = 275525153 is a prime.

It is a super-2 number, since 2×275525161² = 151828228688151842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (275525561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137762580 + 137762581.

It is an arithmetic number, because the mean of its divisors is an integer number (137762581).

Almost surely, 2^275525161 is an apocalyptic number.

It is an amenable number.

275525161 is a deficient number, since it is larger than the sum of its proper divisors (1).

275525161 is an equidigital number, since it uses as much as digits as its factorization.

275525161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 34.

The square root of 275525161 is about 16598.9505993602. The cubic root of 275525161 is about 650.7094116579.

The spelling of 275525161 in words is "two hundred seventy-five million, five hundred twenty-five thousand, one hundred sixty-one".