11051009 has 4 divisors (see below), whose sum is σ = 11074560. Its totient is φ = 11027460.

The previous prime is 11050999. The next prime is 11051011. The reversal of 11051009 is 90015011.

It is a happy number.

11051009 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90015011 = 47 ⋅1915213.

It is a cyclic number.

It is not a de Polignac number, because 11051009 - 2⁴ = 11050993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11051039) 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, 11057 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (2768640).

It is a Proth number, since it is equal to 1349 ⋅ 2¹³ + 1 and 1349 < 2¹³.

Almost surely, 2^11051009 is an apocalyptic number.

It is an amenable number.

11051009 is a deficient number, since it is larger than the sum of its proper divisors (23551).

11051009 is an equidigital number, since it uses as much as digits as its factorization.

11051009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23550.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 11051009 is about 3324.3057921918. The cubic root of 11051009 is about 222.7412457201.

The spelling of 11051009 in words is "eleven million, fifty-one thousand, nine".