55005100009 has 2 divisors, whose sum is σ = 55005100010. Its totient is φ = 55005100008.

The previous prime is 55005099983. The next prime is 55005100121. The reversal of 55005100009 is 90000150055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32513499225 + 22491600784 = 180315^2 + 149972^2 .

It is a cyclic number.

It is not a de Polignac number, because 55005100009 - 2²³ = 54996711401 is a prime.

It is a super-2 number, since 2×55005100009² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55005100309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502550004 + 27502550005.

It is an arithmetic number, because the mean of its divisors is an integer number (27502550005).

Almost surely, 2^55005100009 is an apocalyptic number.

It is an amenable number.

55005100009 is a deficient number, since it is larger than the sum of its proper divisors (1).

55005100009 is an equidigital number, since it uses as much as digits as its factorization.

55005100009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1125, while the sum is 25.

The spelling of 55005100009 in words is "fifty-five billion, five million, one hundred thousand, nine".