53220924 has 72 divisors (see below), whose sum is σ = 140521472. Its totient is φ = 16964640.

The previous prime is 53220917. The next prime is 53220983. The reversal of 53220924 is 42902235.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114717 + ... + 115179.

Almost surely, 2^53220924 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 53220924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70260736).

53220924 is an abundant number, since it is smaller than the sum of its proper divisors (87300548).

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

53220924 is a wasteful number, since it uses less digits than its factorization.

53220924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 53220924 is about 7295.2672329394. The cubic root of 53220924 is about 376.1497724592.

The spelling of 53220924 in words is "fifty-three million, two hundred twenty thousand, nine hundred twenty-four".