55185057089 has 2 divisors, whose sum is σ = 55185057090. Its totient is φ = 55185057088.

The previous prime is 55185057077. The next prime is 55185057241. The reversal of 55185057089 is 98075058155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44443807489 + 10741249600 = 210817^2 + 103640^2 .

It is a cyclic number.

It is not a de Polignac number, because 55185057089 - 2⁸ = 55185056833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55185057089.

It is not a weakly prime, because it can be changed into another prime (55185057049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27592528544 + 27592528545.

It is an arithmetic number, because the mean of its divisors is an integer number (27592528545).

Almost surely, 2^55185057089 is an apocalyptic number.

It is an amenable number.

55185057089 is a deficient number, since it is larger than the sum of its proper divisors (1).

55185057089 is an equidigital number, since it uses as much as digits as its factorization.

55185057089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520000, while the sum is 53.

The spelling of 55185057089 in words is "fifty-five billion, one hundred eighty-five million, fifty-seven thousand, eighty-nine".