55017199 has 2 divisors, whose sum is σ = 55017200. Its totient is φ = 55017198.

The previous prime is 55017143. The next prime is 55017211. The reversal of 55017199 is 99171055.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55017199 - 2⁷ = 55017071 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55017799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27508599 + 27508600.

It is an arithmetic number, because the mean of its divisors is an integer number (27508600).

Almost surely, 2^55017199 is an apocalyptic number.

55017199 is a deficient number, since it is larger than the sum of its proper divisors (1).

55017199 is an equidigital number, since it uses as much as digits as its factorization.

55017199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14175, while the sum is 37.

The square root of 55017199 is about 7417.3579528023. The cubic root of 55017199 is about 380.3348825384.

The spelling of 55017199 in words is "fifty-five million, seventeen thousand, one hundred ninety-nine".