55572212086217 has 2 divisors, whose sum is σ = 55572212086218. Its totient is φ = 55572212086216.

The previous prime is 55572212086201. The next prime is 55572212086267. The reversal of 55572212086217 is 71268021227555.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54428037431296 + 1144174654921 = 7377536^2 + 1069661^2 .

It is a cyclic number.

It is not a de Polignac number, because 55572212086217 - 2⁴ = 55572212086201 is a prime.

It is a super-2 number, since 2×55572212086217² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55572212086267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27786106043108 + 27786106043109.

It is an arithmetic number, because the mean of its divisors is an integer number (27786106043109).

Almost surely, 2^{55572212086217} is an apocalyptic number.

It is an amenable number.

55572212086217 is a deficient number, since it is larger than the sum of its proper divisors (1).

55572212086217 is an equidigital number, since it uses as much as digits as its factorization.

55572212086217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704000, while the sum is 53.

The spelling of 55572212086217 in words is "fifty-five trillion, five hundred seventy-two billion, two hundred twelve million, eighty-six thousand, two hundred seventeen".