53403020 has 48 divisors (see below), whose sum is σ = 124201728. Its totient is φ = 19124160.

The previous prime is 53403019. The next prime is 53403037. The reversal of 53403020 is 2030435.

It is a self number, because there is not a number n which added to its sum of digits gives 53403020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12929 + ... + 16551.

It is an arithmetic number, because the mean of its divisors is an integer number (2587536).

Almost surely, 2^53403020 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 53403020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62100864).

53403020 is an abundant number, since it is smaller than the sum of its proper divisors (70798708).

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

53403020 is a wasteful number, since it uses less digits than its factorization.

53403020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3708 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 53403020 is about 7307.7369958148. The cubic root of 53403020 is about 376.5782843599.

Adding to 53403020 its reverse (2030435), we get a palindrome (55433455).

The spelling of 53403020 in words is "fifty-three million, four hundred three thousand, twenty".