55619017 has 2 divisors, whose sum is σ = 55619018. Its totient is φ = 55619016.

The previous prime is 55618993. The next prime is 55619021. The reversal of 55619017 is 71091655.

55619017 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., 38180041 + 17438976 = 6179^2 + 4176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55619017 is a prime.

It is not a weakly prime, because it can be changed into another prime (55619027) 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, 27809508 + 27809509.

It is an arithmetic number, because the mean of its divisors is an integer number (27809509).

Almost surely, 2^55619017 is an apocalyptic number.

It is an amenable number.

55619017 is a deficient number, since it is larger than the sum of its proper divisors (1).

55619017 is an equidigital number, since it uses as much as digits as its factorization.

55619017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 55619017 is about 7457.8158330707. The cubic root of 55619017 is about 381.7166493361.

The spelling of 55619017 in words is "fifty-five million, six hundred nineteen thousand, seventeen".