11057409 has 24 divisors (see below), whose sum is σ = 17719104. Its totient is φ = 6588000.

The previous prime is 11057401. The next prime is 11057419. The reversal of 11057409 is 90475011.

It is not a de Polignac number, because 11057409 - 2³ = 11057401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11057401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5124 + ... + 6954.

It is an arithmetic number, because the mean of its divisors is an integer number (738296).

Almost surely, 2^11057409 is an apocalyptic number.

It is an amenable number.

11057409 is a deficient number, since it is larger than the sum of its proper divisors (6661695).

11057409 is a wasteful number, since it uses less digits than its factorization.

11057409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909 (or 1906 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 11057409 is about 3325.2682598551. The cubic root of 11057409 is about 222.7842363305.

The spelling of 11057409 in words is "eleven million, fifty-seven thousand, four hundred nine".