53311872 has 64 divisors (see below), whose sum is σ = 149083200. Its totient is φ = 16833024.

The previous prime is 53311871. The next prime is 53311877. The reversal of 53311872 is 27811335.

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

It is a super-2 number, since 2×53311872² = 5684311392288768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53311871) 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, 3643 + ... + 10949.

It is an arithmetic number, because the mean of its divisors is an integer number (2329425).

Almost surely, 2^53311872 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 53311872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74541600).

53311872 is an abundant number, since it is smaller than the sum of its proper divisors (95771328).

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

53311872 is a wasteful number, since it uses less digits than its factorization.

53311872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7343 (or 7331 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 53311872 is about 7301.4979285075. The cubic root of 53311872 is about 376.3639150588.

The spelling of 53311872 in words is "fifty-three million, three hundred eleven thousand, eight hundred seventy-two".