2772312545 has 4 divisors (see below), whose sum is σ = 3326775060. Its totient is φ = 2217850032.

The previous prime is 2772312523. The next prime is 2772312577. The reversal of 2772312545 is 5452132772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 899760016 + 1872552529 = 29996^2 + 43273^2 .

It is a cyclic number.

It is not a de Polignac number, because 2772312545 - 2⁶ = 2772312481 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2772312499 and 2772312508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277231250 + ... + 277231259.

It is an arithmetic number, because the mean of its divisors is an integer number (831693765).

Almost surely, 2^2772312545 is an apocalyptic number.

It is an amenable number.

2772312545 is a deficient number, since it is larger than the sum of its proper divisors (554462515).

2772312545 is an equidigital number, since it uses as much as digits as its factorization.

2772312545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554462514.

The product of its digits is 117600, while the sum is 38.

The square root of 2772312545 is about 52652.7543913896. The cubic root of 2772312545 is about 1404.7985923898.

The spelling of 2772312545 in words is "two billion, seven hundred seventy-two million, three hundred twelve thousand, five hundred forty-five".