54512640 has 396 divisors, whose sum is σ = 233751024. Its totient is φ = 11501568.

The previous prime is 54512611. The next prime is 54512651. The reversal of 54512640 is 4621545.

54512640 is a `hidden beast` number, since 5 + 4 + 5 + 12 + 640 = 666.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4193274 + ... + 4193286.

Almost surely, 2^54512640 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 54512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116875512).

54512640 is an abundant number, since it is smaller than the sum of its proper divisors (179238384).

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

54512640 is a wasteful number, since it uses less digits than its factorization.

54512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 54512640 is about 7383.2675693083. The cubic root of 54512640 is about 379.1686349104.

The spelling of 54512640 in words is "fifty-four million, five hundred twelve thousand, six hundred forty".