54140240 has 240 divisors, whose sum is σ = 170989056. Its totient is φ = 15544320.

The previous prime is 54140239. The next prime is 54140243. The reversal of 54140240 is 4204145.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54140243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1151897 + ... + 1151943.

Almost surely, 2^54140240 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 54140240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85494528).

54140240 is an abundant number, since it is smaller than the sum of its proper divisors (116848816).

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

54140240 is a wasteful number, since it uses less digits than its factorization.

54140240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 54140240 is about 7358.0051644450. The cubic root of 54140240 is about 378.3032382840.

Adding to 54140240 its reverse (4204145), we get a palindrome (58344385).

The spelling of 54140240 in words is "fifty-four million, one hundred forty thousand, two hundred forty".