53915680 has 216 divisors, whose sum is σ = 166809132. Its totient is φ = 16321536.

The previous prime is 53915639. The next prime is 53915689. The reversal of 53915680 is 8651935.

It can be written as a sum of positive squares in 2 ways, for example, as 50183056 + 3732624 = 7084^2 + 1932^2 .

It is not an unprimeable number, because it can be changed into a prime (53915689) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2344149 + ... + 2344171.

Almost surely, 2^53915680 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 53915680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83404566).

53915680 is an abundant number, since it is smaller than the sum of its proper divisors (112893452).

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

53915680 is a wasteful number, since it uses less digits than its factorization.

53915680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 53915680 is about 7342.7297376384. The cubic root of 53915680 is about 377.7794781418.

The spelling of 53915680 in words is "fifty-three million, nine hundred fifteen thousand, six hundred eighty".