55240071040 has 256 divisors, whose sum is σ = 173312524800. Its totient is φ = 16311214080.

The previous prime is 55240071017. The next prime is 55240071043. The reversal of 55240071040 is 4017004255.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55240071043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 906822 + ... + 965818.

It is an arithmetic number, because the mean of its divisors is an integer number (677002050).

Almost surely, 2^55240071040 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 55240071040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86656262400).

55240071040 is an abundant number, since it is smaller than the sum of its proper divisors (118072453760).

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

55240071040 is a wasteful number, since it uses less digits than its factorization.

55240071040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59053 (or 59041 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

Adding to 55240071040 its reverse (4017004255), we get a palindrome (59257075295).

The spelling of 55240071040 in words is "fifty-five billion, two hundred forty million, seventy-one thousand, forty".