55557017 has 4 divisors (see below), whose sum is σ = 57058596. Its totient is φ = 54055440.

The previous prime is 55557013. The next prime is 55557023. The reversal of 55557017 is 71075555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32478601 + 23078416 = 5699^2 + 4804^2 .

It is a cyclic number.

It is not a de Polignac number, because 55557017 - 2² = 55557013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55557013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 750734 + ... + 750807.

It is an arithmetic number, because the mean of its divisors is an integer number (14264649).

Almost surely, 2^55557017 is an apocalyptic number.

It is an amenable number.

55557017 is a deficient number, since it is larger than the sum of its proper divisors (1501579).

55557017 is a wasteful number, since it uses less digits than its factorization.

55557017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501578.

The product of its (nonzero) digits is 30625, while the sum is 35.

The square root of 55557017 is about 7453.6579610283. The cubic root of 55557017 is about 381.5747600276.

The spelling of 55557017 in words is "fifty-five million, five hundred fifty-seven thousand, seventeen".