52440030 has 48 divisors (see below), whose sum is σ = 137095920. Its totient is φ = 13906944.

The previous prime is 52440007. The next prime is 52440067. The reversal of 52440030 is 3004425.

It is a happy number.

52440030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 52439985 and 52440012.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 15861 + ... + 18879.

It is an arithmetic number, because the mean of its divisors is an integer number (2856165).

Almost surely, 2^52440030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52440030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68547960).

52440030 is an abundant number, since it is smaller than the sum of its proper divisors (84655890).

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

52440030 is a wasteful number, since it uses less digits than its factorization.

52440030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225 (or 3222 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 52440030 is about 7241.5488674730. The cubic root of 52440030 is about 374.3009911740.

Adding to 52440030 its reverse (3004425), we get a palindrome (55444455).

The spelling of 52440030 in words is "fifty-two million, four hundred forty thousand, thirty".