275484221 has 6 divisors (see below), whose sum is σ = 278850270. Its totient is φ = 272158328.

The previous prime is 275484217. The next prime is 275484227. The reversal of 275484221 is 122484572.

It can be written as a sum of positive squares in only one way, i.e., 192127321 + 83356900 = 13861^2 + 9130^2 .

It is not a de Polignac number, because 275484221 - 2² = 275484217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275484227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13106 + ... + 26883.

It is an arithmetic number, because the mean of its divisors is an integer number (46475045).

Almost surely, 2^275484221 is an apocalyptic number.

It is an amenable number.

275484221 is a deficient number, since it is larger than the sum of its proper divisors (3366049).

275484221 is an frugal number, since it uses more digits than its factorization.

275484221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40155 (or 40072 counting only the distinct ones).

The product of its digits is 35840, while the sum is 35.

The square root of 275484221 is about 16597.7173430565. The cubic root of 275484221 is about 650.6771806476.

The spelling of 275484221 in words is "two hundred seventy-five million, four hundred eighty-four thousand, two hundred twenty-one".