55200161 has 16 divisors (see below), whose sum is σ = 59163264. Its totient is φ = 51389184.

The previous prime is 55200151. The next prime is 55200163. The reversal of 55200161 is 16100255.

It is a cyclic number.

It is not a de Polignac number, because 55200161 - 2¹⁸ = 54938017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55200163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173975 + ... + 174291.

It is an arithmetic number, because the mean of its divisors is an integer number (3697704).

Almost surely, 2^55200161 is an apocalyptic number.

It is an amenable number.

55200161 is a deficient number, since it is larger than the sum of its proper divisors (3963103).

55200161 is a wasteful number, since it uses less digits than its factorization.

55200161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 55200161 is about 7429.6810833306. The cubic root of 55200161 is about 380.7560225714.

The spelling of 55200161 in words is "fifty-five million, two hundred thousand, one hundred sixty-one".