55117301240 has 128 divisors (see below), whose sum is σ = 128076318720. Its totient is φ = 21338304000.

The previous prime is 55117301201. The next prime is 55117301243. The reversal of 55117301240 is 4210371155.

It is a super-4 number, since 4×55117301240⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55117301243) 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, 53459525 + ... + 53460555.

It is an arithmetic number, because the mean of its divisors is an integer number (1000596240).

Almost surely, 2^55117301240 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 55117301240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64038159360).

55117301240 is an abundant number, since it is smaller than the sum of its proper divisors (72959017480).

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

55117301240 is a wasteful number, since it uses less digits than its factorization.

55117301240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

Adding to 55117301240 its reverse (4210371155), we get a palindrome (59327672395).

The spelling of 55117301240 in words is "fifty-five billion, one hundred seventeen million, three hundred one thousand, two hundred forty".