53032520 has 64 divisors (see below), whose sum is σ = 127370880. Its totient is φ = 19803136.

The previous prime is 53032513. The next prime is 53032523. The reversal of 53032520 is 2523035.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 53032492 and 53032501.

It is not an unprimeable number, because it can be changed into a prime (53032523) 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, 113327 + ... + 113793.

It is an arithmetic number, because the mean of its divisors is an integer number (1990170).

Almost surely, 2^53032520 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 53032520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63685440).

53032520 is an abundant number, since it is smaller than the sum of its proper divisors (74338360).

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

53032520 is a wasteful number, since it uses less digits than its factorization.

53032520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 53032520 is about 7282.3430295476. The cubic root of 53032520 is about 375.7053863889.

Adding to 53032520 its reverse (2523035), we get a palindrome (55555555).

The spelling of 53032520 in words is "fifty-three million, thirty-two thousand, five hundred twenty".