4555215121 has 2 divisors, whose sum is σ = 4555215122. Its totient is φ = 4555215120.

The previous prime is 4555215103. The next prime is 4555215149. The reversal of 4555215121 is 1215125554.

4555215121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4450357521 + 104857600 = 66711^2 + 10240^2 .

It is a cyclic number.

It is not a de Polignac number, because 4555215121 - 2²⁷ = 4420997393 is a prime.

It is not a weakly prime, because it can be changed into another prime (4555212121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2277607560 + 2277607561.

It is an arithmetic number, because the mean of its divisors is an integer number (2277607561).

Almost surely, 2^4555215121 is an apocalyptic number.

It is an amenable number.

4555215121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4555215121 is an equidigital number, since it uses as much as digits as its factorization.

4555215121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10000, while the sum is 31.

The square root of 4555215121 is about 67492.3337942910. Note that the first 3 decimals coincide. The cubic root of 4555215121 is about 1657.6886495974.

The spelling of 4555215121 in words is "four billion, five hundred fifty-five million, two hundred fifteen thousand, one hundred twenty-one".