52505020729 has 4 divisors (see below), whose sum is σ = 60005737984. Its totient is φ = 45004303476.

The previous prime is 52505020723. The next prime is 52505020759. The reversal of 52505020729 is 92702050525.

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 52505020729 - 2³ = 52505020721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52505020721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3750358617 + ... + 3750358630.

It is an arithmetic number, because the mean of its divisors is an integer number (15001434496).

Almost surely, 2^52505020729 is an apocalyptic number.

It is an amenable number.

52505020729 is a deficient number, since it is larger than the sum of its proper divisors (7500717255).

52505020729 is an equidigital number, since it uses as much as digits as its factorization.

52505020729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500717254.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 52505020729 in words is "fifty-two billion, five hundred five million, twenty thousand, seven hundred twenty-nine".