2555005 has 4 divisors (see below), whose sum is σ = 3066012. Its totient is φ = 2044000.

The previous prime is 2554991. The next prime is 2555009. The reversal of 2555005 is 5005552.

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 1592644 + 962361 = 1262^2 + 981^2 .

It is not a de Polignac number, because 2555005 - 2⁵ = 2554973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555009) 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, 255496 + ... + 255505.

It is an arithmetic number, because the mean of its divisors is an integer number (766503).

2^2555005 is an apocalyptic number.

It is an amenable number.

2555005 is a deficient number, since it is larger than the sum of its proper divisors (511007).

2555005 is an equidigital number, since it uses as much as digits as its factorization.

2555005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511006.

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 2555005 is about 1598.4383003419. The cubic root of 2555005 is about 136.7090456187.

The spelling of 2555005 in words is "two million, five hundred fifty-five thousand, five".