53215424 has 56 divisors (see below), whose sum is σ = 110173008. Its totient is φ = 25482240.

The previous prime is 53215411. The next prime is 53215433. The reversal of 53215424 is 42451235.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 53215393 and 53215402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167714 + ... + 168030.

Almost surely, 2^53215424 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 53215424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55086504).

53215424 is an abundant number, since it is smaller than the sum of its proper divisors (56957584).

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

53215424 is a wasteful number, since it uses less digits than its factorization.

53215424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 423 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 53215424 is about 7294.8902664811. The cubic root of 53215424 is about 376.1368145543.

Adding to 53215424 its reverse (42451235), we get a palindrome (95666659).

The spelling of 53215424 in words is "fifty-three million, two hundred fifteen thousand, four hundred twenty-four".