53413520 has 40 divisors (see below), whose sum is σ = 125047800. Its totient is φ = 21217280.

The previous prime is 53413517. The next prime is 53413531. The reversal of 53413520 is 2531435.

It can be written as a sum of positive squares in 4 ways, for example, as 3400336 + 50013184 = 1844^2 + 7072^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9680 + ... + 14160.

It is an arithmetic number, because the mean of its divisors is an integer number (3126195).

Almost surely, 2^53413520 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 53413520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62523900).

53413520 is an abundant number, since it is smaller than the sum of its proper divisors (71634280).

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

53413520 is a wasteful number, since it uses less digits than its factorization.

53413520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643 (or 4637 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53413520 is about 7308.4553771642. The cubic root of 53413520 is about 376.6029634440.

Adding to 53413520 its reverse (2531435), we get a palindrome (55944955).

The spelling of 53413520 in words is "fifty-three million, four hundred thirteen thousand, five hundred twenty".