2522378621 has 16 divisors (see below), whose sum is σ = 3059959680. Its totient is φ = 2029747200.

The previous prime is 2522378527. The next prime is 2522378627. The reversal of 2522378621 is 1268732252.

It is a cyclic number.

It is not a de Polignac number, because 2522378621 - 2¹⁰ = 2522377597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2522378627) 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 15 ways as a sum of consecutive naturals, for example, 21290 + ... + 74148.

It is an arithmetic number, because the mean of its divisors is an integer number (191247480).

Almost surely, 2^2522378621 is an apocalyptic number.

It is an amenable number.

2522378621 is a deficient number, since it is larger than the sum of its proper divisors (537581059).

2522378621 is a wasteful number, since it uses less digits than its factorization.

2522378621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53284.

The product of its digits is 80640, while the sum is 38.

The square root of 2522378621 is about 50223.2876363147. The cubic root of 2522378621 is about 1361.2464461256.

The spelling of 2522378621 in words is "two billion, five hundred twenty-two million, three hundred seventy-eight thousand, six hundred twenty-one".