52520856 has 64 divisors (see below), whose sum is σ = 138240000. Its totient is φ = 16603776.

The previous prime is 52520813. The next prime is 52520857. The reversal of 52520856 is 65802525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52520857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40425 + ... + 41703.

It is an arithmetic number, because the mean of its divisors is an integer number (2160000).

Almost surely, 2^52520856 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 52520856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69120000).

52520856 is an abundant number, since it is smaller than the sum of its proper divisors (85719144).

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

52520856 is a wasteful number, since it uses less digits than its factorization.

52520856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 52520856 is about 7247.1274309205. The cubic root of 52520856 is about 374.4931962640.

The spelling of 52520856 in words is "fifty-two million, five hundred twenty thousand, eight hundred fifty-six".