2775305 has 8 divisors (see below), whose sum is σ = 3586632. Its totient is φ = 2049408.

The previous prime is 2775299. The next prime is 2775313. The reversal of 2775305 is 5035772.

It can be written as a sum of positive squares in 4 ways, for example, as 16384 + 2758921 = 128^2 + 1661^2 .

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 2775305 - 2²⁰ = 1726729 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21284 + ... + 21413.

It is an arithmetic number, because the mean of its divisors is an integer number (448329).

2^2775305 is an apocalyptic number.

It is an amenable number.

2775305 is a deficient number, since it is larger than the sum of its proper divisors (811327).

2775305 is a wasteful number, since it uses less digits than its factorization.

2775305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42715.

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 2775305 is about 1665.9246681648. The cubic root of 2775305 is about 140.5303860690.

The spelling of 2775305 in words is "two million, seven hundred seventy-five thousand, three hundred five".