2550449138 has 8 divisors (see below), whose sum is σ = 3957593580. Its totient is φ = 1231251280.

The previous prime is 2550449137. The next prime is 2550449147. The reversal of 2550449138 is 8319440552.

It can be written as a sum of positive squares in 2 ways, for example, as 2516727889 + 33721249 = 50167^2 + 5807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2550449095 and 2550449104.

It is not an unprimeable number, because it can be changed into a prime (2550449131) by changing a digit.

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, 21986573 + ... + 21986688.

Almost surely, 2^2550449138 is an apocalyptic number.

2550449138 is a deficient number, since it is larger than the sum of its proper divisors (1407144442).

2550449138 is a wasteful number, since it uses less digits than its factorization.

2550449138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43973292.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 2550449138 is about 50501.9716248782. The cubic root of 2550449138 is about 1366.2774139374.

The spelling of 2550449138 in words is "two billion, five hundred fifty million, four hundred forty-nine thousand, one hundred thirty-eight".