2550864643 has 4 divisors (see below), whose sum is σ = 2557525248. Its totient is φ = 2544204040.

The previous prime is 2550864629. The next prime is 2550864649. The reversal of 2550864643 is 3464680552.

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

It is a cyclic number.

It is not a de Polignac number, because 2550864643 - 2⁹ = 2550864131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2550864643.

It is not an unprimeable number, because it can be changed into a prime (2550864649) 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, 3329728 + ... + 3330493.

It is an arithmetic number, because the mean of its divisors is an integer number (639381312).

Almost surely, 2^2550864643 is an apocalyptic number.

2550864643 is a deficient number, since it is larger than the sum of its proper divisors (6660605).

2550864643 is an equidigital number, since it uses as much as digits as its factorization.

2550864643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660604.

The product of its (nonzero) digits is 691200, while the sum is 43.

The square root of 2550864643 is about 50506.0852076262. The cubic root of 2550864643 is about 1366.3516053497.

The spelling of 2550864643 in words is "two billion, five hundred fifty million, eight hundred sixty-four thousand, six hundred forty-three".