52415520121 has 2 divisors, whose sum is σ = 52415520122. Its totient is φ = 52415520120.

The previous prime is 52415520109. The next prime is 52415520127. The reversal of 52415520121 is 12102551425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41763009600 + 10652510521 = 204360^2 + 103211^2 .

It is a cyclic number.

It is not a de Polignac number, because 52415520121 - 2⁷ = 52415519993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52415520121.

It is not a weakly prime, because it can be changed into another prime (52415520127) 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, 26207760060 + 26207760061.

It is an arithmetic number, because the mean of its divisors is an integer number (26207760061).

Almost surely, 2^52415520121 is an apocalyptic number.

It is an amenable number.

52415520121 is a deficient number, since it is larger than the sum of its proper divisors (1).

52415520121 is an equidigital number, since it uses as much as digits as its factorization.

52415520121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 52415520121 in words is "fifty-two billion, four hundred fifteen million, five hundred twenty thousand, one hundred twenty-one".