4551113209 has 2 divisors, whose sum is σ = 4551113210. Its totient is φ = 4551113208.

The previous prime is 4551113207. The next prime is 4551113251. The reversal of 4551113209 is 9023111554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4509794025 + 41319184 = 67155^2 + 6428^2 .

It is a cyclic number.

It is not a de Polignac number, because 4551113209 - 2¹ = 4551113207 is a prime.

It is a super-2 number, since 2×4551113209² = 41425262882268555362, which contains 22 as substring.

Together with 4551113207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4551113207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2275556604 + 2275556605.

It is an arithmetic number, because the mean of its divisors is an integer number (2275556605).

Almost surely, 2^4551113209 is an apocalyptic number.

It is an amenable number.

4551113209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4551113209 is an equidigital number, since it uses as much as digits as its factorization.

4551113209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 4551113209 is about 67461.9389656123. The cubic root of 4551113209 is about 1657.1909244759.

The spelling of 4551113209 in words is "four billion, five hundred fifty-one million, one hundred thirteen thousand, two hundred nine".