52309872 has 120 divisors (see below), whose sum is σ = 153204480. Its totient is φ = 16648320.

The previous prime is 52309861. The next prime is 52309913. The reversal of 52309872 is 27890325.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399247 + ... + 399377.

It is an arithmetic number, because the mean of its divisors is an integer number (1276704).

Almost surely, 2^52309872 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 52309872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76602240).

52309872 is an abundant number, since it is smaller than the sum of its proper divisors (100894608).

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

52309872 is a wasteful number, since it uses less digits than its factorization.

52309872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 52309872 is about 7232.5563945261. The cubic root of 52309872 is about 373.9910585335.

The spelling of 52309872 in words is "fifty-two million, three hundred nine thousand, eight hundred seventy-two".