276120245 has 4 divisors (see below), whose sum is σ = 331344300. Its totient is φ = 220896192.

The previous prime is 276120227. The next prime is 276120259. The reversal of 276120245 is 542021672.

It is a happy number.

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 166771396 + 109348849 = 12914^2 + 10457^2 .

It is a cyclic number.

It is not a de Polignac number, because 276120245 - 2⁶ = 276120181 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 27612020 + ... + 27612029.

It is an arithmetic number, because the mean of its divisors is an integer number (82836075).

Almost surely, 2^276120245 is an apocalyptic number.

It is an amenable number.

276120245 is a deficient number, since it is larger than the sum of its proper divisors (55224055).

276120245 is an equidigital number, since it uses as much as digits as its factorization.

276120245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55224054.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 276120245 is about 16616.8662809809. The cubic root of 276120245 is about 651.1775459322.

The spelling of 276120245 in words is "two hundred seventy-six million, one hundred twenty thousand, two hundred forty-five".