2550642729 has 8 divisors (see below), whose sum is σ = 3401460672. Its totient is φ = 1700126640.

The previous prime is 2550642691. The next prime is 2550642733. The reversal of 2550642729 is 9272460552.

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

It is not a de Polignac number, because 2550642729 - 2¹² = 2550638633 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2550642329) 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 7 ways as a sum of consecutive naturals, for example, 54949 + ... + 90114.

It is an arithmetic number, because the mean of its divisors is an integer number (425182584).

Almost surely, 2^2550642729 is an apocalyptic number.

It is an amenable number.

2550642729 is a deficient number, since it is larger than the sum of its proper divisors (850817943).

2550642729 is a wasteful number, since it uses less digits than its factorization.

2550642729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150927.

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 2550642729 is about 50503.8882562521. Note that the first 3 decimals coincide. The cubic root of 2550642729 is about 1366.3119820081.

The spelling of 2550642729 in words is "two billion, five hundred fifty million, six hundred forty-two thousand, seven hundred twenty-nine".