52221112513 has 2 divisors, whose sum is σ = 52221112514. Its totient is φ = 52221112512.

The previous prime is 52221112483. The next prime is 52221112631. The reversal of 52221112513 is 31521112225.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47579824384 + 4641288129 = 218128^2 + 68127^2 .

It is a cyclic number.

It is not a de Polignac number, because 52221112513 - 2¹³ = 52221104321 is a prime.

It is not a weakly prime, because it can be changed into another prime (52221412513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26110556256 + 26110556257.

It is an arithmetic number, because the mean of its divisors is an integer number (26110556257).

Almost surely, 2^52221112513 is an apocalyptic number.

It is an amenable number.

52221112513 is a deficient number, since it is larger than the sum of its proper divisors (1).

52221112513 is an equidigital number, since it uses as much as digits as its factorization.

52221112513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

Adding to 52221112513 its reverse (31521112225), we get a palindrome (83742224738).

The spelling of 52221112513 in words is "fifty-two billion, two hundred twenty-one million, one hundred twelve thousand, five hundred thirteen".