55210164509 has 2 divisors, whose sum is σ = 55210164510. Its totient is φ = 55210164508.

The previous prime is 55210164469. The next prime is 55210164511. The reversal of 55210164509 is 90546101255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49274232484 + 5935932025 = 221978^2 + 77045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55210164509 is a prime.

It is a super-2 number, since 2×55210164509² (a number of 22 digits) contains 22 as substring.

Together with 55210164511, 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 (55210154509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27605082254 + 27605082255.

It is an arithmetic number, because the mean of its divisors is an integer number (27605082255).

Almost surely, 2^55210164509 is an apocalyptic number.

It is an amenable number.

55210164509 is a deficient number, since it is larger than the sum of its proper divisors (1).

55210164509 is an equidigital number, since it uses as much as digits as its factorization.

55210164509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 55210164509 in words is "fifty-five billion, two hundred ten million, one hundred sixty-four thousand, five hundred nine".