4556559121 has 2 divisors, whose sum is σ = 4556559122. Its totient is φ = 4556559120.

The previous prime is 4556559107. The next prime is 4556559127. The reversal of 4556559121 is 1219556554.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4508451025 + 48108096 = 67145^2 + 6936^2 .

It is a cyclic number.

It is not a de Polignac number, because 4556559121 - 2⁹ = 4556558609 is a prime.

It is not a weakly prime, because it can be changed into another prime (4556559127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2278279560 + 2278279561.

It is an arithmetic number, because the mean of its divisors is an integer number (2278279561).

Almost surely, 2^4556559121 is an apocalyptic number.

It is an amenable number.

4556559121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4556559121 is an equidigital number, since it uses as much as digits as its factorization.

4556559121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270000, while the sum is 43.

The square root of 4556559121 is about 67502.2897463486. The cubic root of 4556559121 is about 1657.8516652770.

The spelling of 4556559121 in words is "four billion, five hundred fifty-six million, five hundred fifty-nine thousand, one hundred twenty-one".