52171040 has 48 divisors (see below), whose sum is σ = 126137088. Its totient is φ = 20380416.

The previous prime is 52171039. The next prime is 52171051. The reversal of 52171040 is 4017125.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3089 + ... + 10671.

It is an arithmetic number, because the mean of its divisors is an integer number (2627856).

Almost surely, 2^52171040 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 52171040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63068544).

52171040 is an abundant number, since it is smaller than the sum of its proper divisors (73966048).

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

52171040 is a wasteful number, since it uses less digits than its factorization.

52171040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7641 (or 7633 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 52171040 is about 7222.9523049789. The cubic root of 52171040 is about 373.6599041604.

Adding to 52171040 its reverse (4017125), we get a palindrome (56188165).

The spelling of 52171040 in words is "fifty-two million, one hundred seventy-one thousand, forty".