52421250 has 80 divisors (see below), whose sum is σ = 149802048. Its totient is φ = 11976000.

The previous prime is 52421233. The next prime is 52421273. The reversal of 52421250 is 5212425.

It is a happy number.

52421250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 25252 + ... + 27248.

Almost surely, 2^52421250 is an apocalyptic number.

52421250 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 52421250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74901024).

52421250 is an abundant number, since it is smaller than the sum of its proper divisors (97380798).

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

52421250 is a wasteful number, since it uses less digits than its factorization.

52421250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029 (or 2014 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52421250 is about 7240.2520674352. The cubic root of 52421250 is about 374.2563038623.

Adding to 52421250 its reverse (5212425), we get a palindrome (57633675).

The spelling of 52421250 in words is "fifty-two million, four hundred twenty-one thousand, two hundred fifty".