52565153440 has 96 divisors (see below), whose sum is σ = 127100897280. Its totient is φ = 20534329344.

The previous prime is 52565153401. The next prime is 52565153477. The reversal of 52565153440 is 4435156525.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 52565153393 and 52565153402.

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, 3594784 + ... + 3609376.

It is an arithmetic number, because the mean of its divisors is an integer number (1323967680).

Almost surely, 2^52565153440 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 52565153440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63550448640).

52565153440 is an abundant number, since it is smaller than the sum of its proper divisors (74535743840).

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

52565153440 is a wasteful number, since it uses less digits than its factorization.

52565153440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15134 (or 15126 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 52565153440 in words is "fifty-two billion, five hundred sixty-five million, one hundred fifty-three thousand, four hundred forty".