54544440 has 128 divisors (see below), whose sum is σ = 176256000. Its totient is φ = 13459968.

The previous prime is 54544417. The next prime is 54544463. The reversal of 54544440 is 4444545.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (54544417) and next prime (54544463).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 54544398 and 54544407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106906 + ... + 107414.

It is an arithmetic number, because the mean of its divisors is an integer number (1377000).

Almost surely, 2^54544440 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 54544440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88128000).

54544440 is an abundant number, since it is smaller than the sum of its proper divisors (121711560).

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

54544440 is a wasteful number, since it uses less digits than its factorization.

54544440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 54544440 is about 7385.4207733886. The cubic root of 54544440 is about 379.2423500387.

Adding to 54544440 its reverse (4444545), we get a palindrome (58988985).

The spelling of 54544440 in words is "fifty-four million, five hundred forty-four thousand, four hundred forty".