55028030025557 has 2 divisors, whose sum is σ = 55028030025558. Its totient is φ = 55028030025556.

The previous prime is 55028030025541. The next prime is 55028030025559. The reversal of 55028030025557 is 75552003082055.

55028030025557 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., 44730868876996 + 10297161148561 = 6688114^2 + 3208919^2 .

It is a cyclic number.

It is not a de Polignac number, because 55028030025557 - 2⁴ = 55028030025541 is a prime.

Together with 55028030025559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55028030025559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27514015012778 + 27514015012779.

It is an arithmetic number, because the mean of its divisors is an integer number (27514015012779).

Almost surely, 2^{55028030025557} is an apocalyptic number.

It is an amenable number.

55028030025557 is a deficient number, since it is larger than the sum of its proper divisors (1).

55028030025557 is an equidigital number, since it uses as much as digits as its factorization.

55028030025557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100000, while the sum is 47.

The spelling of 55028030025557 in words is "fifty-five trillion, twenty-eight billion, thirty million, twenty-five thousand, five hundred fifty-seven".