275225161 has 12 divisors (see below), whose sum is σ = 286735872. Its totient is φ = 263898000.

The previous prime is 275225149. The next prime is 275225179. The reversal of 275225161 is 161522572.

It is not a de Polignac number, because 275225161 - 2⁷ = 275225033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275225761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1015456 + ... + 1015726.

It is an arithmetic number, because the mean of its divisors is an integer number (23894656).

Almost surely, 2^275225161 is an apocalyptic number.

It is an amenable number.

275225161 is a deficient number, since it is larger than the sum of its proper divisors (11510711).

275225161 is an equidigital number, since it uses as much as digits as its factorization.

275225161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 483 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 275225161 is about 16589.9114223072. The cubic root of 275225161 is about 650.4731552947.

The spelling of 275225161 in words is "two hundred seventy-five million, two hundred twenty-five thousand, one hundred sixty-one".