2445554509 has 2 divisors, whose sum is σ = 2445554510. Its totient is φ = 2445554508.

The previous prime is 2445554417. The next prime is 2445554519. The reversal of 2445554509 is 9054555442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1455193609 + 990360900 = 38147^2 + 31470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2445554509 - 2¹³ = 2445546317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2445554519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222777254 + 1222777255.

It is an arithmetic number, because the mean of its divisors is an integer number (1222777255).

Almost surely, 2^2445554509 is an apocalyptic number.

It is an amenable number.

2445554509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445554509 is an equidigital number, since it uses as much as digits as its factorization.

2445554509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720000, while the sum is 43.

The square root of 2445554509 is about 49452.5480536645. The cubic root of 2445554509 is about 1347.2838868021.

The spelling of 2445554509 in words is "two billion, four hundred forty-five million, five hundred fifty-four thousand, five hundred nine".