55557550056 has 64 divisors (see below), whose sum is σ = 140537033280. Its totient is φ = 18300672000.

The previous prime is 55557550007. The next prime is 55557550057. The reversal of 55557550056 is 65005575555.

It is a junction number, because it is equal to n+sod(n) for n = 55557549987 and 55557550014.

It is not an unprimeable number, because it can be changed into a prime (55557550057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1558431 + ... + 1593681.

It is an arithmetic number, because the mean of its divisors is an integer number (2195891145).

Almost surely, 2^55557550056 is an apocalyptic number.

It is an amenable number.

55557550056 is an abundant number, since it is smaller than the sum of its proper divisors (84979483224).

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

55557550056 is a wasteful number, since it uses less digits than its factorization.

55557550056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36034 (or 36030 counting only the distinct ones).

The product of its (nonzero) digits is 3281250, while the sum is 48.

The spelling of 55557550056 in words is "fifty-five billion, five hundred fifty-seven million, five hundred fifty thousand, fifty-six".