52643826 has 48 divisors (see below), whose sum is σ = 120294720. Its totient is φ = 16605600.

The previous prime is 52643821. The next prime is 52643837. The reversal of 52643826 is 62834625.

52643826 is a `hidden beast` number, since 5 + 2 + 643 + 8 + 2 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (52643821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41185 + ... + 42443.

It is an arithmetic number, because the mean of its divisors is an integer number (2506140).

Almost surely, 2^52643826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52643826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60147360).

52643826 is an abundant number, since it is smaller than the sum of its proper divisors (67650894).

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

52643826 is a wasteful number, since it uses less digits than its factorization.

52643826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1388 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 52643826 is about 7255.6065218560. The cubic root of 52643826 is about 374.7852423679.

The spelling of 52643826 in words is "fifty-two million, six hundred forty-three thousand, eight hundred twenty-six".