52122320 has 80 divisors (see below), whose sum is σ = 130170240. Its totient is φ = 19348992.

The previous prime is 52122319. The next prime is 52122341. The reversal of 52122320 is 2322125.

It is a tau number, because it is divible by the number of its divisors (80).

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, 80237 + ... + 80883.

It is an arithmetic number, because the mean of its divisors is an integer number (1627128).

Almost surely, 2^52122320 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 52122320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65085120).

52122320 is an abundant number, since it is smaller than the sum of its proper divisors (78047920).

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

52122320 is a wasteful number, since it uses less digits than its factorization.

52122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 52122320 is about 7219.5789350903. The cubic root of 52122320 is about 373.5435536569.

Adding to 52122320 its reverse (2322125), we get a palindrome (54444445).

The spelling of 52122320 in words is "fifty-two million, one hundred twenty-two thousand, three hundred twenty".