53240020 has 48 divisors (see below), whose sum is σ = 118153728. Its totient is φ = 20119680.

The previous prime is 53239999. The next prime is 53240021. The reversal of 53240020 is 2004235.

It is a junction number, because it is equal to n+sod(n) for n = 53239976 and 53240003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53240021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25662 + ... + 27658.

It is an arithmetic number, because the mean of its divisors is an integer number (2461536).

Almost surely, 2^53240020 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 53240020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59076864).

53240020 is an abundant number, since it is smaller than the sum of its proper divisors (64913708).

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

53240020 is a wasteful number, since it uses less digits than its factorization.

53240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080 (or 2078 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 53240020 is about 7296.5759092879. The cubic root of 53240020 is about 376.1947553756.

Adding to 53240020 its reverse (2004235), we get a palindrome (55244255).

It can be divided in two parts, 532400 and 20, that multiplied together give a cube (10648000 = 220³).

The spelling of 53240020 in words is "fifty-three million, two hundred forty thousand, twenty".