2788549 has 2 divisors, whose sum is σ = 2788550. Its totient is φ = 2788548.

The previous prime is 2788531. The next prime is 2788567. The reversal of 2788549 is 9458872.

It is a balanced prime because it is at equal distance from previous prime (2788531) and next prime (2788567).

It can be written as a sum of positive squares in only one way, i.e., 2722500 + 66049 = 1650^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 2788549 - 2¹³ = 2780357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2788529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394274 + 1394275.

It is an arithmetic number, because the mean of its divisors is an integer number (1394275).

2^2788549 is an apocalyptic number.

It is an amenable number.

2788549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2788549 is an equidigital number, since it uses as much as digits as its factorization.

2788549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 2788549 is about 1669.8949068729. The cubic root of 2788549 is about 140.7535725510.

The spelling of 2788549 in words is "two million, seven hundred eighty-eight thousand, five hundred forty-nine".