52820751617 has 4 divisors (see below), whose sum is σ = 53112579156. Its totient is φ = 52528924080.

The previous prime is 52820751601. The next prime is 52820751647. The reversal of 52820751617 is 71615702825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22225144561 + 30595607056 = 149081^2 + 174916^2 .

It is a cyclic number.

It is not a de Polignac number, because 52820751617 - 2⁴ = 52820751601 is a prime.

It is a super-2 number, since 2×52820751617² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52820751647) 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, 145913498 + ... + 145913859.

It is an arithmetic number, because the mean of its divisors is an integer number (13278144789).

Almost surely, 2^52820751617 is an apocalyptic number.

It is an amenable number.

52820751617 is a deficient number, since it is larger than the sum of its proper divisors (291827539).

52820751617 is a wasteful number, since it uses less digits than its factorization.

52820751617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291827538.

The product of its (nonzero) digits is 235200, while the sum is 44.

The spelling of 52820751617 in words is "fifty-two billion, eight hundred twenty million, seven hundred fifty-one thousand, six hundred seventeen".