54011540 has 48 divisors (see below), whose sum is σ = 125060544. Its totient is φ = 19430400.

The previous prime is 54011539. The next prime is 54011597. The reversal of 54011540 is 4511045.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20075 + ... + 22605.

It is an arithmetic number, because the mean of its divisors is an integer number (2605428).

Almost surely, 2^54011540 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 54011540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62530272).

54011540 is an abundant number, since it is smaller than the sum of its proper divisors (71049004).

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

54011540 is a wasteful number, since it uses less digits than its factorization.

54011540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648 (or 2646 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 54011540 is about 7349.2543839494. The cubic root of 54011540 is about 378.0032380302.

Adding to 54011540 its reverse (4511045), we get a palindrome (58522585).

The spelling of 54011540 in words is "fifty-four million, eleven thousand, five hundred forty".