53131224 has 32 divisors (see below), whose sum is σ = 133056000. Its totient is φ = 17680032.

The previous prime is 53131193. The next prime is 53131231. The reversal of 53131224 is 42213135.

It is a self number, because there is not a number n which added to its sum of digits gives 53131224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15717 + ... + 18795.

It is an arithmetic number, because the mean of its divisors is an integer number (4158000).

Almost surely, 2^53131224 is an apocalyptic number.

It is an amenable number.

53131224 is an abundant number, since it is smaller than the sum of its proper divisors (79924776).

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

53131224 is a wasteful number, since it uses less digits than its factorization.

53131224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807 (or 3803 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 53131224 is about 7289.1168189294. The cubic root of 53131224 is about 375.9383292547.

Adding to 53131224 its reverse (42213135), we get a palindrome (95344359).

The spelling of 53131224 in words is "fifty-three million, one hundred thirty-one thousand, two hundred twenty-four".