2421005557 has 2 divisors, whose sum is σ = 2421005558. Its totient is φ = 2421005556.

The previous prime is 2421005533. The next prime is 2421005563. The reversal of 2421005557 is 7555001242.

2421005557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1664150436 + 756855121 = 40794^2 + 27511^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421005557 - 2²³ = 2412616949 is a prime.

It is a super-2 number, since 2×2421005557² = 11722535814049760498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421005527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210502778 + 1210502779.

It is an arithmetic number, because the mean of its divisors is an integer number (1210502779).

Almost surely, 2^2421005557 is an apocalyptic number.

It is an amenable number.

2421005557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421005557 is an equidigital number, since it uses as much as digits as its factorization.

2421005557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 2421005557 is about 49203.7148699161. The cubic root of 2421005557 is about 1342.7606184533.

Adding to 2421005557 its reverse (7555001242), we get a palindrome (9976006799).

The spelling of 2421005557 in words is "two billion, four hundred twenty-one million, five thousand, five hundred fifty-seven".