53217824 has 48 divisors (see below), whose sum is σ = 118008576. Its totient is φ = 23404800.

The previous prime is 53217811. The next prime is 53217839. The reversal of 53217824 is 42871235.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 8474 + ... + 13350.

It is an arithmetic number, because the mean of its divisors is an integer number (2458512).

Almost surely, 2^53217824 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 53217824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59004288).

53217824 is an abundant number, since it is smaller than the sum of its proper divisors (64790752).

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

53217824 is a wasteful number, since it uses less digits than its factorization.

53217824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4929 (or 4921 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 53217824 is about 7295.0547633311. The cubic root of 53217824 is about 376.1424690226.

The spelling of 53217824 in words is "fifty-three million, two hundred seventeen thousand, eight hundred twenty-four".