2785508045 has 6 divisors (see below), whose sum is σ = 3342751278. Its totient is φ = 2228312024.

The previous prime is 2785508041. The next prime is 2785508057. The reversal of 2785508045 is 5408055872.

It can be written as a sum of positive squares in only one way, i.e., 2228406436 + 557101609 = 47206^2 + 23603^2 .

It is not a de Polignac number, because 2785508045 - 2² = 2785508041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2785507987 and 2785508005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2785508041) 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 5 ways as a sum of consecutive naturals, for example, 106214 + ... + 129816.

It is an arithmetic number, because the mean of its divisors is an integer number (557125213).

Almost surely, 2^2785508045 is an apocalyptic number.

It is an amenable number.

2785508045 is a deficient number, since it is larger than the sum of its proper divisors (557243233).

2785508045 is an frugal number, since it uses more digits than its factorization.

2785508045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47211 (or 23608 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 44.

The square root of 2785508045 is about 52777.9124729275. The cubic root of 2785508045 is about 1407.0238930555.

The spelling of 2785508045 in words is "two billion, seven hundred eighty-five million, five hundred eight thousand, forty-five".