276056405 has 4 divisors (see below), whose sum is σ = 331267692. Its totient is φ = 220845120.

The previous prime is 276056369. The next prime is 276056411. The reversal of 276056405 is 504650672.

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 212168356 + 63888049 = 14566^2 + 7993^2 .

It is a de Polignac number, because none of the positive numbers 2^k-276056405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27605636 + ... + 27605645.

It is an arithmetic number, because the mean of its divisors is an integer number (82816923).

Almost surely, 2^276056405 is an apocalyptic number.

It is an amenable number.

276056405 is a deficient number, since it is larger than the sum of its proper divisors (55211287).

276056405 is an equidigital number, since it uses as much as digits as its factorization.

276056405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55211286.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 276056405 is about 16614.9452301234. The cubic root of 276056405 is about 651.1273571956.

The spelling of 276056405 in words is "two hundred seventy-six million, fifty-six thousand, four hundred five".