54540240 has 40 divisors (see below), whose sum is σ = 169075488. Its totient is φ = 14544000.

The previous prime is 54540229. The next prime is 54540263. The reversal of 54540240 is 4204545.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 54540240.

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 7 ways as a sum of consecutive naturals, for example, 113386 + ... + 113865.

Almost surely, 2^54540240 is an apocalyptic number.

It is an amenable number.

54540240 is an abundant number, since it is smaller than the sum of its proper divisors (114535248).

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

54540240 is a wasteful number, since it uses less digits than its factorization.

54540240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227267 (or 227261 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 54540240 is about 7385.1364239261. The cubic root of 54540240 is about 379.2326157208.

Adding to 54540240 its reverse (4204545), we get a palindrome (58744785).

The spelling of 54540240 in words is "fifty-four million, five hundred forty thousand, two hundred forty".