53250520 has 32 divisors (see below), whose sum is σ = 125025120. Its totient is φ = 20373760.

The previous prime is 53250517. The next prime is 53250523. The reversal of 53250520 is 2505235.

It is an interprime number because it is at equal distance from previous prime (53250517) and next prime (53250523).

It is a junction number, because it is equal to n+sod(n) for n = 53250491 and 53250500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53250523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28021 + ... + 29860.

It is an arithmetic number, because the mean of its divisors is an integer number (3907035).

Almost surely, 2^53250520 is an apocalyptic number.

It is an amenable number.

53250520 is an abundant number, since it is smaller than the sum of its proper divisors (71774600).

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

53250520 is a wasteful number, since it uses less digits than its factorization.

53250520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57915 (or 57911 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 53250520 is about 7297.2953893891. The cubic root of 53250520 is about 376.2194848009.

Adding to 53250520 its reverse (2505235), we get a palindrome (55755755).

The spelling of 53250520 in words is "fifty-three million, two hundred fifty thousand, five hundred twenty".