54444540 has 48 divisors (see below), whose sum is σ = 161415072. Its totient is φ = 13664256.

The previous prime is 54444503. The next prime is 54444547. The reversal of 54444540 is 4544445.

It is a happy number.

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 = 54444498 and 54444507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54444547) 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, 25669 + ... + 27708.

It is an arithmetic number, because the mean of its divisors is an integer number (3362814).

Almost surely, 2^54444540 is an apocalyptic number.

It is an amenable number.

54444540 is an abundant number, since it is smaller than the sum of its proper divisors (106970532).

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

54444540 is a wasteful number, since it uses less digits than its factorization.

54444540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53406 (or 53404 counting only the distinct ones).

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

The square root of 54444540 is about 7378.6543488633. The cubic root of 54444540 is about 379.0106767807.

Adding to 54444540 its reverse (4544445), we get a palindrome (58988985).

The spelling of 54444540 in words is "fifty-four million, four hundred forty-four thousand, five hundred forty".