2550689 has 2 divisors, whose sum is σ = 2550690. Its totient is φ = 2550688.

The previous prime is 2550683. The next prime is 2550703. The reversal of 2550689 is 9860552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2496400 + 54289 = 1580^2 + 233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2550689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2550683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275344 + 1275345.

It is an arithmetic number, because the mean of its divisors is an integer number (1275345).

2^2550689 is an apocalyptic number.

It is an amenable number.

2550689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2550689 is an equidigital number, since it uses as much as digits as its factorization.

2550689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 2550689 is about 1597.0876619647. The cubic root of 2550689 is about 136.6320244009.

The spelling of 2550689 in words is "two million, five hundred fifty thousand, six hundred eighty-nine".