2550406 has 4 divisors (see below), whose sum is σ = 3825612. Its totient is φ = 1275202.

The previous prime is 2550403. The next prime is 2550407. The reversal of 2550406 is 6040552.

2550406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637600 + ... + 637603.

It is an arithmetic number, because the mean of its divisors is an integer number (956403).

2^2550406 is an apocalyptic number.

2550406 is a deficient number, since it is larger than the sum of its proper divisors (1275206).

2550406 is a wasteful number, since it uses less digits than its factorization.

2550406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275205.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2550406 is about 1596.9990607386. Note that the first 3 decimals coincide. The cubic root of 2550406 is about 136.6269710875.

Adding to 2550406 its reverse (6040552), we get a palindrome (8590958).

The spelling of 2550406 in words is "two million, five hundred fifty thousand, four hundred six".