2550505 has 4 divisors (see below), whose sum is σ = 3060612. Its totient is φ = 2040400.

The previous prime is 2550497. The next prime is 2550551. The reversal of 2550505 is 5050552.

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 522729 + 2027776 = 723^2 + 1424^2 .

It is not a de Polignac number, because 2550505 - 2³ = 2550497 is a prime.

It is a Duffinian number.

2550505 is a modest number, since divided by 505 gives 255 as remainder.

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 3 ways as a sum of consecutive naturals, for example, 255046 + ... + 255055.

It is an arithmetic number, because the mean of its divisors is an integer number (765153).

2^2550505 is an apocalyptic number.

It is an amenable number.

2550505 is a deficient number, since it is larger than the sum of its proper divisors (510107).

2550505 is an equidigital number, since it uses as much as digits as its factorization.

2550505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510106.

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

The square root of 2550505 is about 1597.0300560728. The cubic root of 2550505 is about 136.6287388969.

The spelling of 2550505 in words is "two million, five hundred fifty thousand, five hundred five".