4512504421 has 2 divisors, whose sum is σ = 4512504422. Its totient is φ = 4512504420.

The previous prime is 4512504419. The next prime is 4512504443. The reversal of 4512504421 is 1244052154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4509122500 + 3381921 = 67150^2 + 1839^2 .

It is a cyclic number.

It is not a de Polignac number, because 4512504421 - 2¹ = 4512504419 is a prime.

It is a super-2 number, since 2×4512504421² = 40725392299089090482, which contains 22 as substring.

Together with 4512504419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4512504421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4512504401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2256252210 + 2256252211.

It is an arithmetic number, because the mean of its divisors is an integer number (2256252211).

Almost surely, 2^4512504421 is an apocalyptic number.

It is an amenable number.

4512504421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4512504421 is an equidigital number, since it uses as much as digits as its factorization.

4512504421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 4512504421 is about 67175.1771192306. The cubic root of 4512504421 is about 1652.4914208759.

Adding to 4512504421 its reverse (1244052154), we get a palindrome (5756556575).

The spelling of 4512504421 in words is "four billion, five hundred twelve million, five hundred four thousand, four hundred twenty-one".