275640011 has 4 divisors (see below), whose sum is σ = 290147400. Its totient is φ = 261132624.

The previous prime is 275639999. The next prime is 275640037. The reversal of 275640011 is 110046572.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275640011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275640511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7253666 + ... + 7253703.

It is an arithmetic number, because the mean of its divisors is an integer number (72536850).

Almost surely, 2^275640011 is an apocalyptic number.

275640011 is a deficient number, since it is larger than the sum of its proper divisors (14507389).

275640011 is a wasteful number, since it uses less digits than its factorization.

275640011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14507388.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 275640011 is about 16602.4097949665. The cubic root of 275640011 is about 650.7998130742.

Adding to 275640011 its reverse (110046572), we get a palindrome (385686583).

The spelling of 275640011 in words is "two hundred seventy-five million, six hundred forty thousand, eleven".