52739689520 has 160 divisors (see below), whose sum is σ = 141635184768. Its totient is φ = 17889951744.

The previous prime is 52739689511. The next prime is 52739689529. The reversal of 52739689520 is 2598693725.

It is an interprime number because it is at equal distance from previous prime (52739689511) and next prime (52739689529).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (52739689529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21290522 + ... + 21292998.

Almost surely, 2^52739689520 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 52739689520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70817592384).

52739689520 is an abundant number, since it is smaller than the sum of its proper divisors (88895495248).

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

52739689520 is a wasteful number, since it uses less digits than its factorization.

52739689520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887 (or 2881 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 52739689520 in words is "fifty-two billion, seven hundred thirty-nine million, six hundred eighty-nine thousand, five hundred twenty".