53004420 has 288 divisors, whose sum is σ = 201277440. Its totient is φ = 11024640.

The previous prime is 53004409. The next prime is 53004449. The reversal of 53004420 is 2440035.

It is a happy number.

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 = 53004393 and 53004402.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 898351 + ... + 898409.

It is an arithmetic number, because the mean of its divisors is an integer number (698880).

Almost surely, 2^53004420 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 53004420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100638720).

53004420 is an abundant number, since it is smaller than the sum of its proper divisors (148273020).

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

53004420 is a wasteful number, since it uses less digits than its factorization.

53004420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 130 counting only the distinct ones).

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

The square root of 53004420 is about 7280.4134497980. The cubic root of 53004420 is about 375.6390171338.

Adding to 53004420 its reverse (2440035), we get a palindrome (55444455).

The spelling of 53004420 in words is "fifty-three million, four thousand, four hundred twenty".