52009320 has 192 divisors, whose sum is σ = 180169920. Its totient is φ = 11904000.

The previous prime is 52009319. The next prime is 52009337. The reversal of 52009320 is 2390025.

52009320 = 176² + 177² + ... + 544².

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1268500 + ... + 1268540.

It is an arithmetic number, because the mean of its divisors is an integer number (938385).

Almost surely, 2^52009320 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 52009320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90084960).

52009320 is an abundant number, since it is smaller than the sum of its proper divisors (128160600).

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

52009320 is a wasteful number, since it uses less digits than its factorization.

52009320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 52009320 is about 7211.7487477033. The cubic root of 52009320 is about 373.2734137111.

Adding to 52009320 its reverse (2390025), we get a palindrome (54399345).

The spelling of 52009320 in words is "fifty-two million, nine thousand, three hundred twenty".