54947840 has 52 divisors (see below), whose sum is σ = 131907864. Its totient is φ = 21970944.

The previous prime is 54947833. The next prime is 54947857. The reversal of 54947840 is 4874945.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19139 + ... + 21821.

Almost surely, 2^54947840 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 54947840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65953932).

54947840 is an abundant number, since it is smaller than the sum of its proper divisors (76960024).

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

54947840 is an equidigital number, since it uses as much as digits as its factorization.

54947840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712 (or 2690 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 54947840 is about 7412.6810264573. The cubic root of 54947840 is about 380.1749886580.

The spelling of 54947840 in words is "fifty-four million, nine hundred forty-seven thousand, eight hundred forty".