52121022313 has 4 divisors (see below), whose sum is σ = 55186964820. Its totient is φ = 49055079808.

The previous prime is 52121022259. The next prime is 52121022389. The reversal of 52121022313 is 31322012125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32633699904 + 19487322409 = 180648^2 + 139597^2 .

It is a cyclic number.

It is not a de Polignac number, because 52121022313 - 2⁹ = 52121021801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52121023313) 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 in 3 ways as a sum of consecutive naturals, for example, 1532971228 + ... + 1532971261.

It is an arithmetic number, because the mean of its divisors is an integer number (13796741205).

Almost surely, 2^52121022313 is an apocalyptic number.

It is an amenable number.

52121022313 is a deficient number, since it is larger than the sum of its proper divisors (3065942507).

52121022313 is a wasteful number, since it uses less digits than its factorization.

52121022313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065942506.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 52121022313 its reverse (31322012125), we get a palindrome (83443034438).

The spelling of 52121022313 in words is "fifty-two billion, one hundred twenty-one million, twenty-two thousand, three hundred thirteen".