54243784 has 48 divisors (see below), whose sum is σ = 124556400. Its totient is φ = 22020768.

The previous prime is 54243733. The next prime is 54243793. The reversal of 54243784 is 48734245.

54243784 = T₁₃₅₁ + T₁₃₅₂ + ... + T₁₄₀₇.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3807 + ... + 11089.

It is an arithmetic number, because the mean of its divisors is an integer number (2594925).

Almost surely, 2^54243784 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 54243784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62278200).

54243784 is an abundant number, since it is smaller than the sum of its proper divisors (70312616).

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

54243784 is a wasteful number, since it uses less digits than its factorization.

54243784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7322 (or 7311 counting only the distinct ones).

The product of its digits is 107520, while the sum is 37.

The square root of 54243784 is about 7365.0379496646. The cubic root of 54243784 is about 378.5442548567.

The spelling of 54243784 in words is "fifty-four million, two hundred forty-three thousand, seven hundred eighty-four".