55117201 has 2 divisors, whose sum is σ = 55117202. Its totient is φ = 55117200.

The previous prime is 55117159. The next prime is 55117207. The reversal of 55117201 is 10271155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53640976 + 1476225 = 7324^2 + 1215^2 .

It is a cyclic number.

It is not a de Polignac number, because 55117201 - 2⁹ = 55116689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55117207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27558600 + 27558601.

It is an arithmetic number, because the mean of its divisors is an integer number (27558601).

Almost surely, 2^55117201 is an apocalyptic number.

It is an amenable number.

55117201 is a deficient number, since it is larger than the sum of its proper divisors (1).

55117201 is an equidigital number, since it uses as much as digits as its factorization.

55117201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 55117201 is about 7424.0959719012. The cubic root of 55117201 is about 380.5651815997.

Adding to 55117201 its reverse (10271155), we get a palindrome (65388356).

The spelling of 55117201 in words is "fifty-five million, one hundred seventeen thousand, two hundred one".