53994240 has 216 divisors, whose sum is σ = 192912720. Its totient is φ = 13934592.

The previous prime is 53994229. The next prime is 53994247. The reversal of 53994240 is 4249935.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 53994195 and 53994204.

It is not an unprimeable number, because it can be changed into a prime (53994247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 495306 + ... + 495414.

Almost surely, 2^53994240 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 53994240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96456360).

53994240 is an abundant number, since it is smaller than the sum of its proper divisors (138918480).

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

53994240 is a wasteful number, since it uses less digits than its factorization.

53994240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 53994240 is about 7348.0772995390. The cubic root of 53994240 is about 377.9628753327.

The spelling of 53994240 in words is "fifty-three million, nine hundred ninety-four thousand, two hundred forty".