54243644 has 24 divisors (see below), whose sum is σ = 116833248. Its totient is φ = 21458880.

The previous prime is 54243587. The next prime is 54243649. The reversal of 54243644 is 44634245.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 54243644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54243649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74147 + ... + 74874.

It is an arithmetic number, because the mean of its divisors is an integer number (4868052).

Almost surely, 2^54243644 is an apocalyptic number.

It is an amenable number.

54243644 is an abundant number, since it is smaller than the sum of its proper divisors (62589604).

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

54243644 is a wasteful number, since it uses less digits than its factorization.

54243644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149045 (or 149043 counting only the distinct ones).

The product of its digits is 46080, while the sum is 32.

The square root of 54243644 is about 7365.0284452947. The cubic root of 54243644 is about 378.5439291897.

Adding to 54243644 its reverse (44634245), we get a palindrome (98877889).

The spelling of 54243644 in words is "fifty-four million, two hundred forty-three thousand, six hundred forty-four".