275221071 has 12 divisors (see below), whose sum is σ = 412265672. Its totient is φ = 183480552.

The previous prime is 275221057. The next prime is 275221087. The reversal of 275221071 is 170122572.

It is not a de Polignac number, because 275221071 - 2⁷ = 275220943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275221171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566056 + ... + 566541.

Almost surely, 2^275221071 is an apocalyptic number.

275221071 is a deficient number, since it is larger than the sum of its proper divisors (137044601).

275221071 is an equidigital number, since it uses as much as digits as its factorization.

275221071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132612 (or 1132600 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 275221071 is about 16589.7881541628. The cubic root of 275221071 is about 650.4699331469.

It can be divided in two parts, 2752210 and 71, that added together give a square (2752281 = 1659²).

The spelling of 275221071 in words is "two hundred seventy-five million, two hundred twenty-one thousand, seventy-one".