53156224 has 64 divisors (see below), whose sum is σ = 121665600. Its totient is φ = 22878720.

The previous prime is 53156221. The next prime is 53156237. The reversal of 53156224 is 42265135.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 53156192 and 53156201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53156221) 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, 25759 + ... + 27745.

It is an arithmetic number, because the mean of its divisors is an integer number (1901025).

Almost surely, 2^53156224 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 53156224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60832800).

53156224 is an abundant number, since it is smaller than the sum of its proper divisors (68509376).

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

53156224 is a wasteful number, since it uses less digits than its factorization.

53156224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031 (or 2019 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 53156224 is about 7290.8315026477. The cubic root of 53156224 is about 375.9972838192.

The spelling of 53156224 in words is "fifty-three million, one hundred fifty-six thousand, two hundred twenty-four".