10555009 has 2 divisors, whose sum is σ = 10555010. Its totient is φ = 10555008.

The previous prime is 10555007. The next prime is 10555031. The reversal of 10555009 is 90055501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 1555009 = 3000^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 10555009 - 2¹ = 10555007 is a prime.

It is a super-2 number, since 2×10555009² = 222816429980162, which contains 22 as substring.

Together with 10555007, it forms a pair of twin primes.

It is equal to p₆₉₉₀₁₀ and since 10555009 and 699010 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (10555007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5277504 + 5277505.

It is an arithmetic number, because the mean of its divisors is an integer number (5277505).

Almost surely, 2^10555009 is an apocalyptic number.

It is an amenable number.

10555009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10555009 is an equidigital number, since it uses as much as digits as its factorization.

10555009 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 square root of 10555009 is about 3248.8473340556. The cubic root of 10555009 is about 219.3576926739.

The spelling of 10555009 in words is "ten million, five hundred fifty-five thousand, nine".