53071224 has 32 divisors (see below), whose sum is σ = 132933120. Its totient is φ = 17656416.

The previous prime is 53071223. The next prime is 53071231. The reversal of 53071224 is 42217035.

It is a Cunningham number, because it is equal to 7285²-1.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 53071194 and 53071203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53071223) 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, 12747 + ... + 16389.

It is an arithmetic number, because the mean of its divisors is an integer number (4154160).

Almost surely, 2^53071224 is an apocalyptic number.

It is an amenable number.

53071224 is an abundant number, since it is smaller than the sum of its proper divisors (79861896).

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

53071224 is a wasteful number, since it uses less digits than its factorization.

53071224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259 (or 4255 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 53071224 is about 7284.9999313658. Note that the first 4 decimals coincide. The cubic root of 53071224 is about 375.7967628073.

Adding to 53071224 its reverse (42217035), we get a palindrome (95288259).

The spelling of 53071224 in words is "fifty-three million, seventy-one thousand, two hundred twenty-four".