55085558357 has 2 divisors, whose sum is σ = 55085558358. Its totient is φ = 55085558356.

The previous prime is 55085558351. The next prime is 55085558369. The reversal of 55085558357 is 75385558055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36737772241 + 18347786116 = 191671^2 + 135454^2 .

It is a cyclic number.

It is not a de Polignac number, because 55085558357 - 2⁶ = 55085558293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55085558351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27542779178 + 27542779179.

It is an arithmetic number, because the mean of its divisors is an integer number (27542779179).

Almost surely, 2^55085558357 is an apocalyptic number.

It is an amenable number.

55085558357 is a deficient number, since it is larger than the sum of its proper divisors (1).

55085558357 is an equidigital number, since it uses as much as digits as its factorization.

55085558357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000000, while the sum is 56.

The spelling of 55085558357 in words is "fifty-five billion, eighty-five million, five hundred fifty-eight thousand, three hundred fifty-seven".