2780575285 has 16 divisors (see below), whose sum is σ = 3373167600. Its totient is φ = 2200214016.

The previous prime is 2780575283. The next prime is 2780575297. The reversal of 2780575285 is 5825750872.

It can be written as a sum of positive squares in 8 ways, for example, as 2125764 + 2778449521 = 1458^2 + 52711^2 .

It is a cyclic number.

It is not a de Polignac number, because 2780575285 - 2¹ = 2780575283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780575283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332131 + ... + 340399.

It is an arithmetic number, because the mean of its divisors is an integer number (210822975).

Almost surely, 2^2780575285 is an apocalyptic number.

It is an amenable number.

2780575285 is a deficient number, since it is larger than the sum of its proper divisors (592592315).

2780575285 is a wasteful number, since it uses less digits than its factorization.

2780575285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000.

The product of its (nonzero) digits is 1568000, while the sum is 49.

The square root of 2780575285 is about 52731.1604746188. The cubic root of 2780575285 is about 1406.1928523015.

The spelling of 2780575285 in words is "two billion, seven hundred eighty million, five hundred seventy-five thousand, two hundred eighty-five".