52516122521 has 4 divisors (see below), whose sum is σ = 52625760000. Its totient is φ = 52406485044.

The previous prime is 52516122467. The next prime is 52516122559. The reversal of 52516122521 is 12522161525.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52516122521 - 2¹⁸ = 52515860377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52516122121) 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, 54818021 + ... + 54818978.

It is an arithmetic number, because the mean of its divisors is an integer number (13156440000).

Almost surely, 2^52516122521 is an apocalyptic number.

It is an amenable number.

52516122521 is a deficient number, since it is larger than the sum of its proper divisors (109637479).

52516122521 is a wasteful number, since it uses less digits than its factorization.

52516122521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109637478.

The product of its digits is 12000, while the sum is 32.

The spelling of 52516122521 in words is "fifty-two billion, five hundred sixteen million, one hundred twenty-two thousand, five hundred twenty-one".