275048821 has 2 divisors, whose sum is σ = 275048822. Its totient is φ = 275048820.

The previous prime is 275048801. The next prime is 275048827. The reversal of 275048821 is 128840572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246050596 + 28998225 = 15686^2 + 5385^2 .

It is a cyclic number.

It is not a de Polignac number, because 275048821 - 2¹⁷ = 274917749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275048827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137524410 + 137524411.

It is an arithmetic number, because the mean of its divisors is an integer number (137524411).

Almost surely, 2^275048821 is an apocalyptic number.

It is an amenable number.

275048821 is a deficient number, since it is larger than the sum of its proper divisors (1).

275048821 is an equidigital number, since it uses as much as digits as its factorization.

275048821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 275048821 is about 16584.5958949864. The cubic root of 275048821 is about 650.3342036790.

The spelling of 275048821 in words is "two hundred seventy-five million, forty-eight thousand, eight hundred twenty-one".