53236530 has 48 divisors (see below), whose sum is σ = 140698584. Its totient is φ = 13962240.

The previous prime is 53236529. The next prime is 53236543. The reversal of 53236530 is 3563235.

53236530 is a `hidden beast` number, since 5 + 3 + 2 + 3 + 653 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16621929 + 36614601 = 4077^2 + 6051^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53236494 and 53236503.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 642 + ... + 10338.

Almost surely, 2^53236530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53236530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70349292).

53236530 is an abundant number, since it is smaller than the sum of its proper divisors (87462054).

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

53236530 is a wasteful number, since it uses less digits than its factorization.

53236530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9771 (or 9768 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 53236530 is about 7296.3367520969. The cubic root of 53236530 is about 376.1865350658.

Adding to 53236530 its reverse (3563235), we get a palindrome (56799765).

The spelling of 53236530 in words is "fifty-three million, two hundred thirty-six thousand, five hundred thirty".