54243280 has 80 divisors (see below), whose sum is σ = 155240064. Its totient is φ = 17164800.

The previous prime is 54243263. The next prime is 54243281. The reversal of 54243280 is 8234245.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54243281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3555 + ... + 11005.

Almost surely, 2^54243280 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 54243280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77620032).

54243280 is an abundant number, since it is smaller than the sum of its proper divisors (100996784).

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

54243280 is a wasteful number, since it uses less digits than its factorization.

54243280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484 (or 7478 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 54243280 is about 7365.0037338755. The cubic root of 54243280 is about 378.5430824527.

The spelling of 54243280 in words is "fifty-four million, two hundred forty-three thousand, two hundred eighty".