54247920 has 160 divisors (see below), whose sum is σ = 178113600. Its totient is φ = 13639680.

The previous prime is 54247873. The next prime is 54247927. The reversal of 54247920 is 2974245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54247927) 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, 364006 + ... + 364154.

It is an arithmetic number, because the mean of its divisors is an integer number (1113210).

Almost surely, 2^54247920 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 54247920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89056800).

54247920 is an abundant number, since it is smaller than the sum of its proper divisors (123865680).

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

54247920 is a wasteful number, since it uses less digits than its factorization.

54247920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 54247920 is about 7365.3187303741. The cubic root of 54247920 is about 378.5538757394.

The spelling of 54247920 in words is "fifty-four million, two hundred forty-seven thousand, nine hundred twenty".