55221470665133 has 2 divisors, whose sum is σ = 55221470665134. Its totient is φ = 55221470665132.

The previous prime is 55221470665057. The next prime is 55221470665201. The reversal of 55221470665133 is 33156607412255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54388810765129 + 832659900004 = 7374877^2 + 912502^2 .

It is a cyclic number.

It is not a de Polignac number, because 55221470665133 - 2¹⁴ = 55221470648749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55221470665733) 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, 27610735332566 + 27610735332567.

It is an arithmetic number, because the mean of its divisors is an integer number (27610735332567).

Almost surely, 2^{55221470665133} is an apocalyptic number.

It is an amenable number.

55221470665133 is a deficient number, since it is larger than the sum of its proper divisors (1).

55221470665133 is an equidigital number, since it uses as much as digits as its factorization.

55221470665133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 55221470665133 in words is "fifty-five trillion, two hundred twenty-one billion, four hundred seventy million, six hundred sixty-five thousand, one hundred thirty-three".