275805641 has 2 divisors, whose sum is σ = 275805642. Its totient is φ = 275805640.

The previous prime is 275805613. The next prime is 275805679. The reversal of 275805641 is 146508572.

It is an a-pointer prime, because the next prime (275805679) can be obtained adding 275805641 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222457225 + 53348416 = 14915^2 + 7304^2 .

It is a cyclic number.

It is not a de Polignac number, because 275805641 - 2¹⁴ = 275789257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 275805595 and 275805604.

It is not a weakly prime, because it can be changed into another prime (275802641) 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 as a sum of consecutive naturals, namely, 137902820 + 137902821.

It is an arithmetic number, because the mean of its divisors is an integer number (137902821).

Almost surely, 2^275805641 is an apocalyptic number.

It is an amenable number.

275805641 is a deficient number, since it is larger than the sum of its proper divisors (1).

275805641 is an equidigital number, since it uses as much as digits as its factorization.

275805641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 275805641 is about 16607.3971771617. The cubic root of 275805641 is about 650.9301405369.

The spelling of 275805641 in words is "two hundred seventy-five million, eight hundred five thousand, six hundred forty-one".