52351720505 has 16 divisors (see below), whose sum is σ = 73737096960. Its totient is φ = 34928096832.

The previous prime is 52351720501. The next prime is 52351720513. The reversal of 52351720505 is 50502715325.

It is a happy number.

52351720505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52351720505 - 2² = 52351720501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (52351720501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20211725 + ... + 20214314.

It is an arithmetic number, because the mean of its divisors is an integer number (4608568560).

Almost surely, 2^52351720505 is an apocalyptic number.

It is an amenable number.

52351720505 is a deficient number, since it is larger than the sum of its proper divisors (21385376455).

52351720505 is a wasteful number, since it uses less digits than its factorization.

52351720505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40426088.

The product of its (nonzero) digits is 52500, while the sum is 35.

The spelling of 52351720505 in words is "fifty-two billion, three hundred fifty-one million, seven hundred twenty thousand, five hundred five".