55297536840 has 1008 divisors, whose sum is σ = 236002418100. Its totient is φ = 11616224256.

The previous prime is 55297536799. The next prime is 55297536907. The reversal of 55297536840 is 4863579255.

55297536840 is a `hidden beast` number, since 5 + 5 + 29 + 7 + 536 + 84 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 16810159716 + 38487377124 = 129654^2 + 196182^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 251 ways as a sum of consecutive naturals, for example, 241473846 + ... + 241474074.

Almost surely, 2^55297536840 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 55297536840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118001209050).

55297536840 is an abundant number, since it is smaller than the sum of its proper divisors (180704881260).

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

55297536840 is a wasteful number, since it uses less digits than its factorization.

55297536840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 55297536840 in words is "fifty-five billion, two hundred ninety-seven million, five hundred thirty-six thousand, eight hundred forty".