2765551 has 2 divisors, whose sum is σ = 2765552. Its totient is φ = 2765550.

The previous prime is 2765531. The next prime is 2765579. The reversal of 2765551 is 1555672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2765551 - 2⁵ = 2765519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2765531) by changing a digit.

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 as a sum of consecutive naturals, namely, 1382775 + 1382776.

It is an arithmetic number, because the mean of its divisors is an integer number (1382776).

2^2765551 is an apocalyptic number.

2765551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2765551 is an equidigital number, since it uses as much as digits as its factorization.

2765551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10500, while the sum is 31.

The square root of 2765551 is about 1662.9945880850. The cubic root of 2765551 is about 140.3655582544.

The spelling of 2765551 in words is "two million, seven hundred sixty-five thousand, five hundred fifty-one".