55203287040 has 624 divisors, whose sum is σ = 219883135680. Its totient is φ = 12669419520.

The previous prime is 55203287023. The next prime is 55203287053. The reversal of 55203287040 is 4078230255.

55203287040 is a `hidden beast` number, since 5 + 520 + 3 + 28 + 70 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55203286986 and 55203287004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38522164 + ... + 38523596.

It is an arithmetic number, because the mean of its divisors is an integer number (352376820).

Almost surely, 2^55203287040 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 55203287040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109941567840).

55203287040 is an abundant number, since it is smaller than the sum of its proper divisors (164679848640).

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

55203287040 is a wasteful number, since it uses less digits than its factorization.

55203287040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

It can be divided in two parts, 55203 and 287040, that added together give a palindrome (342243).

The spelling of 55203287040 in words is "fifty-five billion, two hundred three million, two hundred eighty-seven thousand, forty".