11251605 has 16 divisors (see below), whose sum is σ = 18584064. Its totient is φ = 5807040.

The previous prime is 11251601. The next prime is 11251609. The reversal of 11251605 is 50615211.

11251605 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11251601) and next prime (11251609).

It is not a de Polignac number, because 11251605 - 2² = 11251601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11251601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11634 + ... + 12563.

It is an arithmetic number, because the mean of its divisors is an integer number (1161504).

Almost surely, 2^11251605 is an apocalyptic number.

11251605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11251605 is a deficient number, since it is larger than the sum of its proper divisors (7332459).

11251605 is a wasteful number, since it uses less digits than its factorization.

11251605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24236.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 11251605 is about 3354.3412169903. The cubic root of 11251605 is about 224.0808926058.

Adding to 11251605 its reverse (50615211), we get a palindrome (61866816).

The spelling of 11251605 in words is "eleven million, two hundred fifty-one thousand, six hundred five".