52857072 has 60 divisors (see below), whose sum is σ = 148416840. Its totient is φ = 17560704.

The previous prime is 52857071. The next prime is 52857109. The reversal of 52857072 is 27075825.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52857071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79879 + ... + 80537.

It is an arithmetic number, because the mean of its divisors is an integer number (2473614).

Almost surely, 2^52857072 is an apocalyptic number.

It is an amenable number.

52857072 is an abundant number, since it is smaller than the sum of its proper divisors (95559768).

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

52857072 is a wasteful number, since it uses less digits than its factorization.

52857072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 52857072 is about 7270.2869269376. The cubic root of 52857072 is about 375.2906120608.

It can be divided in two parts, 528 and 57072, that added together give a square (57600 = 240²).

The spelling of 52857072 in words is "fifty-two million, eight hundred fifty-seven thousand, seventy-two".