52515143725821 has 8 divisors (see below), whose sum is σ = 80023076153664. Its totient is φ = 30008653557600.

The previous prime is 52515143725771. The next prime is 52515143725861. The reversal of 52515143725821 is 12852734151525.

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

It is not a de Polignac number, because 52515143725821 - 2¹¹ = 52515143723773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52515143725861) 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, 1250360564880 + ... + 1250360564921.

It is an arithmetic number, because the mean of its divisors is an integer number (10002884519208).

Almost surely, 2^{52515143725821} is an apocalyptic number.

It is an amenable number.

52515143725821 is a deficient number, since it is larger than the sum of its proper divisors (27507932427843).

52515143725821 is a wasteful number, since it uses less digits than its factorization.

52515143725821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500721129811.

The product of its digits is 3360000, while the sum is 51.

The spelling of 52515143725821 in words is "fifty-two trillion, five hundred fifteen billion, one hundred forty-three million, seven hundred twenty-five thousand, eight hundred twenty-one".