4545555449 has 2 divisors, whose sum is σ = 4545555450. Its totient is φ = 4545555448.

The previous prime is 4545555431. The next prime is 4545555461. The reversal of 4545555449 is 9445555454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3747888400 + 797667049 = 61220^2 + 28243^2 .

It is a cyclic number.

It is not a de Polignac number, because 4545555449 - 2²⁰ = 4544506873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4545555397 and 4545555406.

It is not a weakly prime, because it can be changed into another prime (4545555419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272777724 + 2272777725.

It is an arithmetic number, because the mean of its divisors is an integer number (2272777725).

Almost surely, 2^4545555449 is an apocalyptic number.

It is an amenable number.

4545555449 is a deficient number, since it is larger than the sum of its proper divisors (1).

4545555449 is an equidigital number, since it uses as much as digits as its factorization.

4545555449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200000, while the sum is 50.

The square root of 4545555449 is about 67420.7345628924. The cubic root of 4545555449 is about 1656.5160697237.

The spelling of 4545555449 in words is "four billion, five hundred forty-five million, five hundred fifty-five thousand, four hundred forty-nine".