10550009 has 4 divisors (see below), whose sum is σ = 10557540. Its totient is φ = 10542480.

The previous prime is 10550003. The next prime is 10550027. The reversal of 10550009 is 90005501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90005501 = 53 ⋅1698217.

It can be written as a sum of positive squares in 2 ways, for example, as 765625 + 9784384 = 875^2 + 3128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10550009 is a prime.

It is a super-2 number, since 2×10550009² = 222605379800162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10550003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974 + ... + 4695.

It is an arithmetic number, because the mean of its divisors is an integer number (2639385).

Almost surely, 2^10550009 is an apocalyptic number.

It is an amenable number.

10550009 is a deficient number, since it is larger than the sum of its proper divisors (7531).

10550009 is an equidigital number, since it uses as much as digits as its factorization.

10550009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7530.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 10550009 is about 3248.0777392175. The cubic root of 10550009 is about 219.3230499845.

The spelling of 10550009 in words is "ten million, five hundred fifty thousand, nine".