2770772561 has 8 divisors (see below), whose sum is σ = 2835105000. Its totient is φ = 2707050240.

The previous prime is 2770772551. The next prime is 2770772569. The reversal of 2770772561 is 1652770772.

It can be written as a sum of positive squares in 4 ways, for example, as 19140625 + 2751631936 = 4375^2 + 52456^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2770772561 - 2²² = 2766578257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2770772569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143336 + ... + 161513.

It is an arithmetic number, because the mean of its divisors is an integer number (354388125).

Almost surely, 2^2770772561 is an apocalyptic number.

It is an amenable number.

2770772561 is a deficient number, since it is larger than the sum of its proper divisors (64332439).

2770772561 is a wasteful number, since it uses less digits than its factorization.

2770772561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305059.

The product of its (nonzero) digits is 288120, while the sum is 44.

The square root of 2770772561 is about 52638.1283956791. The cubic root of 2770772561 is about 1404.5384283548.

The spelling of 2770772561 in words is "two billion, seven hundred seventy million, seven hundred seventy-two thousand, five hundred sixty-one".