2772143461 has 4 divisors (see below), whose sum is σ = 2774400300. Its totient is φ = 2769886624.

The previous prime is 2772143441. The next prime is 2772143501. The reversal of 2772143461 is 1643412772.

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 2509509025 + 262634436 = 50095^2 + 16206^2 .

It is a cyclic number.

It is not a de Polignac number, because 2772143461 - 2⁹ = 2772142949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2772143461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772143441) 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 3 ways as a sum of consecutive naturals, for example, 1126576 + ... + 1129033.

It is an arithmetic number, because the mean of its divisors is an integer number (693600075).

Almost surely, 2^2772143461 is an apocalyptic number.

It is an amenable number.

2772143461 is a deficient number, since it is larger than the sum of its proper divisors (2256839).

2772143461 is a wasteful number, since it uses less digits than its factorization.

2772143461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256838.

The product of its digits is 56448, while the sum is 37.

The square root of 2772143461 is about 52651.1487149141. The cubic root of 2772143461 is about 1404.7700321426.

The spelling of 2772143461 in words is "two billion, seven hundred seventy-two million, one hundred forty-three thousand, four hundred sixty-one".