2445555689 has 8 divisors (see below), whose sum is σ = 2602832040. Its totient is φ = 2289770496.

The previous prime is 2445555647. The next prime is 2445555709. The reversal of 2445555689 is 9865555442.

2445555689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 421275625 + 2024280064 = 20525^2 + 44992^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2445555689 - 2⁸ = 2445555433 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2445555689.

It is not an unprimeable number, because it can be changed into a prime (2445555289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369404 + ... + 375965.

It is an arithmetic number, because the mean of its divisors is an integer number (325354005).

Almost surely, 2^2445555689 is an apocalyptic number.

It is an amenable number.

2445555689 is a deficient number, since it is larger than the sum of its proper divisors (157276351).

2445555689 is a wasteful number, since it uses less digits than its factorization.

2445555689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745579.

The product of its digits is 8640000, while the sum is 53.

The square root of 2445555689 is about 49452.5599842920. The cubic root of 2445555689 is about 1347.2841034939.

The spelling of 2445555689 in words is "two billion, four hundred forty-five million, five hundred fifty-five thousand, six hundred eighty-nine".