52161570528 has 96 divisors (see below), whose sum is σ = 139819097376. Its totient is φ = 17021042688.

The previous prime is 52161570499. The next prime is 52161570557. The reversal of 52161570528 is 82507516125.

It is an interprime number because it is at equal distance from previous prime (52161570499) and next prime (52161570557).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×52161570528³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52161570528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2314000 + ... + 2336432.

It is an arithmetic number, because the mean of its divisors is an integer number (1456448931).

Almost surely, 2^52161570528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52161570528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69909548688).

52161570528 is an abundant number, since it is smaller than the sum of its proper divisors (87657526848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52161570528 is a wasteful number, since it uses less digits than its factorization.

52161570528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22956 (or 22948 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 42.

The spelling of 52161570528 in words is "fifty-two billion, one hundred sixty-one million, five hundred seventy thousand, five hundred twenty-eight".