52045240 has 48 divisors (see below), whose sum is σ = 126819000. Its totient is φ = 19214208.

The previous prime is 52045223. The next prime is 52045241. The reversal of 52045240 is 4254025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52045241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2911 + ... + 10609.

Almost surely, 2^52045240 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 52045240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63409500).

52045240 is an abundant number, since it is smaller than the sum of its proper divisors (74773760).

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

52045240 is a wasteful number, since it uses less digits than its factorization.

52045240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7736 (or 7719 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 52045240 is about 7214.2386985738. The cubic root of 52045240 is about 373.3593271300.

Adding to 52045240 its reverse (4254025), we get a palindrome (56299265).

The spelling of 52045240 in words is "fifty-two million, forty-five thousand, two hundred forty".