2522321778 has 16 divisors (see below), whose sum is σ = 5161961376. Its totient is φ = 821220960.

The previous prime is 2522321771. The next prime is 2522321797. The reversal of 2522321778 is 8771232252.

It is not an unprimeable number, because it can be changed into a prime (2522321771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4887963 + ... + 4888478.

It is an arithmetic number, because the mean of its divisors is an integer number (322622586).

Almost surely, 2^2522321778 is an apocalyptic number.

2522321778 is an abundant number, since it is smaller than the sum of its proper divisors (2639639598).

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

2522321778 is a wasteful number, since it uses less digits than its factorization.

2522321778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9776489.

The product of its digits is 94080, while the sum is 39.

The square root of 2522321778 is about 50222.7217303085. The cubic root of 2522321778 is about 1361.2362206037.

The spelling of 2522321778 in words is "two billion, five hundred twenty-two million, three hundred twenty-one thousand, seven hundred seventy-eight".