54500040 has 256 divisors, whose sum is σ = 212544000. Its totient is φ = 12317184.

The previous prime is 54500021. The next prime is 54500053. The reversal of 54500040 is 4000545.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 54499986 and 54500022.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 612316 + ... + 612404.

It is an arithmetic number, because the mean of its divisors is an integer number (830250).

Almost surely, 2^54500040 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 54500040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106272000).

54500040 is an abundant number, since it is smaller than the sum of its proper divisors (158043960).

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

54500040 is an equidigital number, since it uses as much as digits as its factorization.

54500040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 54500040 is about 7382.4142392580. The cubic root of 54500040 is about 379.1394190996.

Adding to 54500040 its reverse (4000545), we get a palindrome (58500585).

The spelling of 54500040 in words is "fifty-four million, five hundred thousand, forty".