53113212 has 24 divisors (see below), whose sum is σ = 137701200. Its totient is φ = 17704368.

The previous prime is 53113171. The next prime is 53113217. The reversal of 53113212 is 21231135.

53113212 is a `hidden beast` number, since 531 + 132 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53113217) 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, 245787 + ... + 246002.

It is an arithmetic number, because the mean of its divisors is an integer number (5737550).

Almost surely, 2^53113212 is an apocalyptic number.

It is an amenable number.

53113212 is an abundant number, since it is smaller than the sum of its proper divisors (84587988).

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

53113212 is a wasteful number, since it uses less digits than its factorization.

53113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491802 (or 491794 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 53113212 is about 7287.8811735648. The cubic root of 53113212 is about 375.8958422071.

Adding to 53113212 its reverse (21231135), we get a palindrome (74344347).

The spelling of 53113212 in words is "fifty-three million, one hundred thirteen thousand, two hundred twelve".