55418401 has 2 divisors, whose sum is σ = 55418402. Its totient is φ = 55418400.

The previous prime is 55418387. The next prime is 55418413. The reversal of 55418401 is 10481455.

55418401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49773025 + 5645376 = 7055^2 + 2376^2 .

It is a cyclic number.

It is not a de Polignac number, because 55418401 - 2¹¹ = 55416353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55418401.

It is not a weakly prime, because it can be changed into another prime (55418491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27709200 + 27709201.

It is an arithmetic number, because the mean of its divisors is an integer number (27709201).

Almost surely, 2^55418401 is an apocalyptic number.

It is an amenable number.

55418401 is a deficient number, since it is larger than the sum of its proper divisors (1).

55418401 is an equidigital number, since it uses as much as digits as its factorization.

55418401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 55418401 is about 7444.3536321161. The cubic root of 55418401 is about 381.2571498793.

Adding to 55418401 its reverse (10481455), we get a palindrome (65899856).

The spelling of 55418401 in words is "fifty-five million, four hundred eighteen thousand, four hundred one".