55557888887 has 8 divisors (see below), whose sum is σ = 58874358816. Its totient is φ = 52246792192.

The previous prime is 55557888863. The next prime is 55557888899. The reversal of 55557888887 is 78888875555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55557888887 - 2²² = 55553694583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55557888187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1322003 + ... + 1363380.

It is an arithmetic number, because the mean of its divisors is an integer number (7359294852).

Almost surely, 2^55557888887 is an apocalyptic number.

55557888887 is a deficient number, since it is larger than the sum of its proper divisors (3316469929).

55557888887 is a wasteful number, since it uses less digits than its factorization.

55557888887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686617.

The product of its digits is 1003520000, while the sum is 74.

The spelling of 55557888887 in words is "fifty-five billion, five hundred fifty-seven million, eight hundred eighty-eight thousand, eight hundred eighty-seven".