55512153509 has 2 divisors, whose sum is σ = 55512153510. Its totient is φ = 55512153508.

The previous prime is 55512153479. The next prime is 55512153523. The reversal of 55512153509 is 90535121555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52043296900 + 3468856609 = 228130^2 + 58897^2 .

It is a cyclic number.

It is not a de Polignac number, because 55512153509 - 2⁸ = 55512153253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55512153589) 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, 27756076754 + 27756076755.

It is an arithmetic number, because the mean of its divisors is an integer number (27756076755).

Almost surely, 2^55512153509 is an apocalyptic number.

It is an amenable number.

55512153509 is a deficient number, since it is larger than the sum of its proper divisors (1).

55512153509 is an equidigital number, since it uses as much as digits as its factorization.

55512153509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168750, while the sum is 41.

The spelling of 55512153509 in words is "fifty-five billion, five hundred twelve million, one hundred fifty-three thousand, five hundred nine".