55088009 has 2 divisors, whose sum is σ = 55088010. Its totient is φ = 55088008.

The previous prime is 55087927. The next prime is 55088027. The reversal of 55088009 is 90088055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41925625 + 13162384 = 6475^2 + 3628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55088009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55088009.

It is not a weakly prime, because it can be changed into another prime (55088309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27544004 + 27544005.

It is an arithmetic number, because the mean of its divisors is an integer number (27544005).

Almost surely, 2^55088009 is an apocalyptic number.

It is an amenable number.

55088009 is a deficient number, since it is larger than the sum of its proper divisors (1).

55088009 is an equidigital number, since it uses as much as digits as its factorization.

55088009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 55088009 is about 7422.1296808935. The cubic root of 55088009 is about 380.4979828518.

The spelling of 55088009 in words is "fifty-five million, eighty-eight thousand, nine".