55240887648 has 48 divisors (see below), whose sum is σ = 145036359216. Its totient is φ = 18409943040.

The previous prime is 55240887617. The next prime is 55240887671. The reversal of 55240887648 is 84678804255.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447388 + ... + 557348.

It is an arithmetic number, because the mean of its divisors is an integer number (3021590817).

Almost surely, 2^55240887648 is an apocalyptic number.

It is an amenable number.

55240887648 is an abundant number, since it is smaller than the sum of its proper divisors (89795471568).

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

55240887648 is a wasteful number, since it uses less digits than its factorization.

55240887648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115207 (or 115199 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 57.

The spelling of 55240887648 in words is "fifty-five billion, two hundred forty million, eight hundred eighty-seven thousand, six hundred forty-eight".