2750005 has 8 divisors (see below), whose sum is σ = 3494232. Its totient is φ = 2070528.

The previous prime is 2749991. The next prime is 2750021. The reversal of 2750005 is 5000572.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1096209 + 1653796 = 1047^2 + 1286^2 .

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 2750005 - 2¹³ = 2741813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16092 + ... + 16261.

It is an arithmetic number, because the mean of its divisors is an integer number (436779).

2^2750005 is an apocalyptic number.

It is an amenable number.

2750005 is a deficient number, since it is larger than the sum of its proper divisors (744227).

2750005 is a wasteful number, since it uses less digits than its factorization.

2750005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32375.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 2750005 is about 1658.3139027337. The cubic root of 2750005 is about 140.1020514430.

Adding to 2750005 its reverse (5000572), we get a palindrome (7750577).

The spelling of 2750005 in words is "two million, seven hundred fifty thousand, five".