52021972 has 24 divisors (see below), whose sum is σ = 96707520. Its totient is φ = 24401280.

The previous prime is 52021967. The next prime is 52021979. The reversal of 52021972 is 27912025.

52021972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 52021972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52021979) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23347 + ... + 25477.

It is an arithmetic number, because the mean of its divisors is an integer number (4029480).

Almost surely, 2^52021972 is an apocalyptic number.

It is an amenable number.

52021972 is a deficient number, since it is larger than the sum of its proper divisors (44685548).

52021972 is a wasteful number, since it uses less digits than its factorization.

52021972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511 (or 2509 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 52021972 is about 7212.6258741182. The cubic root of 52021972 is about 373.3036792631.

Adding to 52021972 its reverse (27912025), we get a palindrome (79933997).

The spelling of 52021972 in words is "fifty-two million, twenty-one thousand, nine hundred seventy-two".