2779201 has 2 divisors, whose sum is σ = 2779202. Its totient is φ = 2779200.

The previous prime is 2779193. The next prime is 2779229. The reversal of 2779201 is 1029772.

It is a happy number.

It is an a-pointer prime, because the next prime (2779229) can be obtained adding 2779201 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2178576 + 600625 = 1476^2 + 775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2779201 - 2³ = 2779193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2779201.

It is not a weakly prime, because it can be changed into another prime (2779261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389600 + 1389601.

It is an arithmetic number, because the mean of its divisors is an integer number (1389601).

2^2779201 is an apocalyptic number.

It is an amenable number.

2779201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2779201 is an equidigital number, since it uses as much as digits as its factorization.

2779201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 2779201 is about 1667.0935786572. The cubic root of 2779201 is about 140.5961146268.

The spelling of 2779201 in words is "two million, seven hundred seventy-nine thousand, two hundred one".