55643017 has 2 divisors, whose sum is σ = 55643018. Its totient is φ = 55643016.

The previous prime is 55642997. The next prime is 55643033. The reversal of 55643017 is 71034655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35473936 + 20169081 = 5956^2 + 4491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55643017 is a prime.

It is a super-2 number, since 2×55643017² = 6192290681724578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55643017.

It is not a weakly prime, because it can be changed into another prime (55643087) 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 as a sum of consecutive naturals, namely, 27821508 + 27821509.

It is an arithmetic number, because the mean of its divisors is an integer number (27821509).

Almost surely, 2^55643017 is an apocalyptic number.

It is an amenable number.

55643017 is a deficient number, since it is larger than the sum of its proper divisors (1).

55643017 is an equidigital number, since it uses as much as digits as its factorization.

55643017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 55643017 is about 7459.4247097213. The cubic root of 55643017 is about 381.7715459206.

The spelling of 55643017 in words is "fifty-five million, six hundred forty-three thousand, seventeen".