2755609 has 4 divisors (see below), whose sum is σ = 2850660. Its totient is φ = 2660560.

The previous prime is 2755601. The next prime is 2755619. The reversal of 2755609 is 9065572.

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 1440000 + 1315609 = 1200^2 + 1147^2 .

It is a cyclic number.

It is not a de Polignac number, because 2755609 - 2³ = 2755601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2755601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47482 + ... + 47539.

It is an arithmetic number, because the mean of its divisors is an integer number (712665).

2^2755609 is an apocalyptic number.

2755609 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2755609 is a deficient number, since it is larger than the sum of its proper divisors (95051).

2755609 is an equidigital number, since it uses as much as digits as its factorization.

2755609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95050.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 2755609 is about 1660.0027108412. The cubic root of 2755609 is about 140.1971542012.

It can be divided in two parts, 2755 and 609, that added together give a square (3364 = 58²).

The spelling of 2755609 in words is "two million, seven hundred fifty-five thousand, six hundred nine".