4521532510021 has 2 divisors, whose sum is σ = 4521532510022. Its totient is φ = 4521532510020.

The previous prime is 4521532510007. The next prime is 4521532510043. The reversal of 4521532510021 is 1200152351254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3721384369921 + 800148140100 = 1929089^2 + 894510^2 .

It is a cyclic number.

It is not a de Polignac number, because 4521532510021 - 2³³ = 4512942575429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4521532516021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260766255010 + 2260766255011.

It is an arithmetic number, because the mean of its divisors is an integer number (2260766255011).

Almost surely, 2^{4521532510021} is an apocalyptic number.

It is an amenable number.

4521532510021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4521532510021 is an equidigital number, since it uses as much as digits as its factorization.

4521532510021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 4521532510021 its reverse (1200152351254), we get a palindrome (5721684861275).

The spelling of 4521532510021 in words is "four trillion, five hundred twenty-one billion, five hundred thirty-two million, five hundred ten thousand, twenty-one".