53136220 has 48 divisors (see below), whose sum is σ = 119151648. Its totient is φ = 19834880.

The previous prime is 53136211. The next prime is 53136221. The reversal of 53136220 is 2263135.

It is a junction number, because it is equal to n+sod(n) for n = 53136191 and 53136200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53136221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43944 + ... + 45136.

It is an arithmetic number, because the mean of its divisors is an integer number (2482326).

Almost surely, 2^53136220 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 53136220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59575824).

53136220 is an abundant number, since it is smaller than the sum of its proper divisors (66015428).

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

53136220 is a wasteful number, since it uses less digits than its factorization.

53136220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 53136220 is about 7289.4595135716. The cubic root of 53136220 is about 375.9501122132.

Adding to 53136220 its reverse (2263135), we get a palindrome (55399355).

The spelling of 53136220 in words is "fifty-three million, one hundred thirty-six thousand, two hundred twenty".