55598661515273 has 2 divisors, whose sum is σ = 55598661515274. Its totient is φ = 55598661515272.

The previous prime is 55598661515237. The next prime is 55598661515291. The reversal of 55598661515273 is 37251516689555.

Together with previous prime (55598661515237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49910946893824 + 5687714621449 = 7064768^2 + 2384893^2 .

It is a cyclic number.

It is not a de Polignac number, because 55598661515273 - 2⁸ = 55598661515017 is a prime.

It is a super-2 number, since 2×55598661515273² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55598661515473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27799330757636 + 27799330757637.

It is an arithmetic number, because the mean of its divisors is an integer number (27799330757637).

Almost surely, 2^{55598661515273} is an apocalyptic number.

It is an amenable number.

55598661515273 is a deficient number, since it is larger than the sum of its proper divisors (1).

55598661515273 is an equidigital number, since it uses as much as digits as its factorization.

55598661515273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200000, while the sum is 68.

The spelling of 55598661515273 in words is "fifty-five trillion, five hundred ninety-eight billion, six hundred sixty-one million, five hundred fifteen thousand, two hundred seventy-three".