4515012421 has 2 divisors, whose sum is σ = 4515012422. Its totient is φ = 4515012420.

The previous prime is 4515012419. The next prime is 4515012499. The reversal of 4515012421 is 1242105154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2985420321 + 1529592100 = 54639^2 + 39110^2 .

It is a cyclic number.

It is not a de Polignac number, because 4515012421 - 2¹ = 4515012419 is a prime.

Together with 4515012419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4515010421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2257506210 + 2257506211.

It is an arithmetic number, because the mean of its divisors is an integer number (2257506211).

Almost surely, 2^4515012421 is an apocalyptic number.

It is an amenable number.

4515012421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4515012421 is an equidigital number, since it uses as much as digits as its factorization.

4515012421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 4515012421 is about 67193.8421360172. The cubic root of 4515012421 is about 1652.7975096551.

Adding to 4515012421 its reverse (1242105154), we get a palindrome (5757117575).

The spelling of 4515012421 in words is "four billion, five hundred fifteen million, twelve thousand, four hundred twenty-one".