275040305 has 8 divisors (see below), whose sum is σ = 332969832. Its totient is φ = 218084608.

The previous prime is 275040253. The next prime is 275040307. The reversal of 275040305 is 503040572.

It can be written as a sum of positive squares in 4 ways, for example, as 8567329 + 266472976 = 2927^2 + 16324^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 275040305 - 2¹⁴ = 275023921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275040307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242834 + ... + 243963.

It is an arithmetic number, because the mean of its divisors is an integer number (41621229).

Almost surely, 2^275040305 is an apocalyptic number.

It is an amenable number.

275040305 is a deficient number, since it is larger than the sum of its proper divisors (57929527).

275040305 is a wasteful number, since it uses less digits than its factorization.

275040305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486915.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 275040305 is about 16584.3391487270. The cubic root of 275040305 is about 650.3274917757.

Adding to 275040305 its reverse (503040572), we get a palindrome (778080877).

The spelling of 275040305 in words is "two hundred seventy-five million, forty thousand, three hundred five".