55200017 has 4 divisors (see below), whose sum is σ = 55217700. Its totient is φ = 55182336.

The previous prime is 55200011. The next prime is 55200053. The reversal of 55200017 is 71000255.

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 26050816 + 29149201 = 5104^2 + 5399^2 .

It is a cyclic number.

It is not a de Polignac number, because 55200017 - 2¹⁰ = 55198993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55200011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2768 + ... + 10865.

It is an arithmetic number, because the mean of its divisors is an integer number (13804425).

Almost surely, 2^55200017 is an apocalyptic number.

It is an amenable number.

55200017 is a deficient number, since it is larger than the sum of its proper divisors (17683).

55200017 is a wasteful number, since it uses less digits than its factorization.

55200017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17682.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 55200017 is about 7429.6713924641. The cubic root of 55200017 is about 380.7556914799.

The spelling of 55200017 in words is "fifty-five million, two hundred thousand, seventeen".