2775431 has 2 divisors, whose sum is σ = 2775432. Its totient is φ = 2775430.

The previous prime is 2775391. The next prime is 2775449. The reversal of 2775431 is 1345772.

2775431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2775431 is a prime.

It is a super-2 number, since 2×2775431² = 15406034471522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2775394 and 2775403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2775931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387715 + 1387716.

It is an arithmetic number, because the mean of its divisors is an integer number (1387716).

2^2775431 is an apocalyptic number.

2775431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2775431 is an equidigital number, since it uses as much as digits as its factorization.

2775431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 29.

The square root of 2775431 is about 1665.9624845716. The cubic root of 2775431 is about 140.5325127494.

The spelling of 2775431 in words is "two million, seven hundred seventy-five thousand, four hundred thirty-one".