52381072 has 20 divisors (see below), whose sum is σ = 104763136. Its totient is φ = 25345440.

The previous prime is 52381057. The next prime is 52381073. The reversal of 52381072 is 27018325.

52381072 is an admirable number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 52381072.

It is not an unprimeable number, because it can be changed into a prime (52381073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52308 + ... + 53299.

Almost surely, 2^52381072 is an apocalyptic number.

It is an amenable number.

52381072 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

52381072 is a wasteful number, since it uses less digits than its factorization.

52381072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105646 (or 105640 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 52381072 is about 7237.4769084260. The cubic root of 52381072 is about 374.1606638113.

Adding to 52381072 its reverse (27018325), we get a palindrome (79399397).

The spelling of 52381072 in words is "fifty-two million, three hundred eighty-one thousand, seventy-two".