276385045 has 4 divisors (see below), whose sum is σ = 331662060. Its totient is φ = 221108032.

The previous prime is 276385027. The next prime is 276385061. The reversal of 276385045 is 540583672.

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 113592964 + 162792081 = 10658^2 + 12759^2 .

It is a cyclic number.

It is not a de Polignac number, because 276385045 - 2⁵ = 276385013 is a prime.

It is a super-3 number, since 3×276385045³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 276384989 and 276385007.

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, 27638500 + ... + 27638509.

It is an arithmetic number, because the mean of its divisors is an integer number (82915515).

Almost surely, 2^276385045 is an apocalyptic number.

It is an amenable number.

276385045 is a deficient number, since it is larger than the sum of its proper divisors (55277015).

276385045 is an equidigital number, since it uses as much as digits as its factorization.

276385045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55277014.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 276385045 is about 16624.8321796041. The cubic root of 276385045 is about 651.3856397196.

The spelling of 276385045 in words is "two hundred seventy-six million, three hundred eighty-five thousand, forty-five".