2772145 has 12 divisors (see below), whose sum is σ = 3404700. Its totient is φ = 2166720.

The previous prime is 2772137. The next prime is 2772179. The reversal of 2772145 is 5412772.

It can be written as a sum of positive squares in 6 ways, for example, as 1682209 + 1089936 = 1297^2 + 1044^2 .

It is not a de Polignac number, because 2772145 - 2³ = 2772137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18531 + ... + 18679.

It is an arithmetic number, because the mean of its divisors is an integer number (283725).

2^2772145 is an apocalyptic number.

It is an amenable number.

2772145 is a deficient number, since it is larger than the sum of its proper divisors (632555).

2772145 is an equidigital number, since it uses as much as digits as its factorization.

2772145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 215 counting only the distinct ones).

The product of its digits is 3920, while the sum is 28.

The square root of 2772145 is about 1664.9759758027. The cubic root of 2772145 is about 140.4770292103.

The spelling of 2772145 in words is "two million, seven hundred seventy-two thousand, one hundred forty-five".