53731680 has 192 divisors, whose sum is σ = 183472128. Its totient is φ = 13178880.

The previous prime is 53731663. The next prime is 53731681. The reversal of 53731680 is 8613735.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53731681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342162 + ... + 342318.

It is an arithmetic number, because the mean of its divisors is an integer number (955584).

Almost surely, 2^53731680 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 53731680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91736064).

53731680 is an abundant number, since it is smaller than the sum of its proper divisors (129740448).

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

53731680 is a wasteful number, since it uses less digits than its factorization.

53731680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 53731680 is about 7330.1896291979. The cubic root of 53731680 is about 377.3492344170.

The spelling of 53731680 in words is "fifty-three million, seven hundred thirty-one thousand, six hundred eighty".