52520651561 has 8 divisors (see below), whose sum is σ = 63182738880. Its totient is φ = 42648348528.

The previous prime is 52520651531. The next prime is 52520651563. The reversal of 52520651561 is 16515602525.

52520651561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52520651561 - 2⁶ = 52520651497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52520651563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197445926 + ... + 197446191.

It is an arithmetic number, because the mean of its divisors is an integer number (7897842360).

Almost surely, 2^52520651561 is an apocalyptic number.

It is an amenable number.

52520651561 is a deficient number, since it is larger than the sum of its proper divisors (10662087319).

52520651561 is a wasteful number, since it uses less digits than its factorization.

52520651561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394892143.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 52520651561 in words is "fifty-two billion, five hundred twenty million, six hundred fifty-one thousand, five hundred sixty-one".