276232081 has 4 divisors (see below), whose sum is σ = 277307172. Its totient is φ = 275156992.

The previous prime is 276232067. The next prime is 276232097. The reversal of 276232081 is 180232672.

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

It can be written as a sum of positive squares in 2 ways, for example, as 270273600 + 5958481 = 16440^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 276232081 - 2⁵ = 276232049 is a prime.

It is a super-2 number, since 2×276232081² = 152608325147181122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276232381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537160 + ... + 537673.

It is an arithmetic number, because the mean of its divisors is an integer number (69326793).

Almost surely, 2^276232081 is an apocalyptic number.

It is an amenable number.

276232081 is a deficient number, since it is larger than the sum of its proper divisors (1075091).

276232081 is a wasteful number, since it uses less digits than its factorization.

276232081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075090.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 276232081 is about 16620.2310754093. The cubic root of 276232081 is about 651.2654487735.

It can be divided in two parts, 2762 and 32081, that added together give a palindrome (34843).

The spelling of 276232081 in words is "two hundred seventy-six million, two hundred thirty-two thousand, eighty-one".