52543420 has 48 divisors (see below), whose sum is σ = 114162048. Its totient is φ = 20301120.

The previous prime is 52543409. The next prime is 52543451. The reversal of 52543420 is 2434525.

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, 91735 + ... + 92305.

It is an arithmetic number, because the mean of its divisors is an integer number (2378376).

Almost surely, 2^52543420 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 52543420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57081024).

52543420 is an abundant number, since it is smaller than the sum of its proper divisors (61618628).

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

52543420 is a wasteful number, since it uses less digits than its factorization.

52543420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 52543420 is about 7248.6840184960. The cubic root of 52543420 is about 374.5468184839.

Adding to 52543420 its reverse (2434525), we get a palindrome (54977945).

The spelling of 52543420 in words is "fifty-two million, five hundred forty-three thousand, four hundred twenty".