52643250 has 128 divisors (see below), whose sum is σ = 159494400. Its totient is φ = 12744000.

The previous prime is 52643249. The next prime is 52643263. The reversal of 52643250 is 5234625.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73896 + ... + 74604.

It is an arithmetic number, because the mean of its divisors is an integer number (1246050).

Almost surely, 2^52643250 is an apocalyptic number.

52643250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 52643250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79747200).

52643250 is an abundant number, since it is smaller than the sum of its proper divisors (106851150).

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

52643250 is a wasteful number, since it uses less digits than its factorization.

52643250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 52643250 is about 7255.5668283050. The cubic root of 52643250 is about 374.7838754644.

Adding to 52643250 its reverse (5234625), we get a palindrome (57877875).

The spelling of 52643250 in words is "fifty-two million, six hundred forty-three thousand, two hundred fifty".