2545564578 has 8 divisors (see below), whose sum is σ = 5091129168. Its totient is φ = 848521524.

The previous prime is 2545564529. The next prime is 2545564579. The reversal of 2545564578 is 8754655452.

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

2545564578 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2545564578.

It is not an unprimeable number, because it can be changed into a prime (2545564579) 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, 212130376 + ... + 212130387.

It is an arithmetic number, because the mean of its divisors is an integer number (636391146).

Almost surely, 2^2545564578 is an apocalyptic number.

2545564578 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2545564578 is a wasteful number, since it uses less digits than its factorization.

2545564578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424260768.

The product of its digits is 6720000, while the sum is 51.

The square root of 2545564578 is about 50453.5883560327. The cubic root of 2545564578 is about 1365.4046357720.

The spelling of 2545564578 in words is "two billion, five hundred forty-five million, five hundred sixty-four thousand, five hundred seventy-eight".