11573405 has 8 divisors (see below), whose sum is σ = 13920984. Its totient is φ = 9236800.

The previous prime is 11573399. The next prime is 11573411. The reversal of 11573405 is 50437511.

It is an interprime number because it is at equal distance from previous prime (11573399) and next prime (11573411).

It can be written as a sum of positive squares in 4 ways, for example, as 2343961 + 9229444 = 1531^2 + 3038^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11573405 - 2¹⁶ = 11507869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206 + ... + 4815.

It is an arithmetic number, because the mean of its divisors is an integer number (1740123).

Almost surely, 2^11573405 is an apocalyptic number.

It is an amenable number.

11573405 is a deficient number, since it is larger than the sum of its proper divisors (2347579).

11573405 is an equidigital number, since it uses as much as digits as its factorization.

11573405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 11573405 is about 3401.9707523728. The cubic root of 11573405 is about 226.1971092141.

The spelling of 11573405 in words is "eleven million, five hundred seventy-three thousand, four hundred five".