11573217 has 6 divisors (see below), whose sum is σ = 16716882. Its totient is φ = 7715472.

The previous prime is 11573203. The next prime is 11573231. The reversal of 11573217 is 71237511.

It is a happy number.

11573217 is digitally balanced in base 2 and base 4, because in such bases 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 (11573203) and next prime (11573231).

It can be written as a sum of positive squares in only one way, i.e., 11532816 + 40401 = 3396^2 + 201^2 .

It is not a de Polignac number, because 11573217 - 2⁶ = 11573153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11573257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 642948 + ... + 642965.

It is an arithmetic number, because the mean of its divisors is an integer number (2786147).

Almost surely, 2^11573217 is an apocalyptic number.

It is an amenable number.

11573217 is a deficient number, since it is larger than the sum of its proper divisors (5143665).

11573217 is a wasteful number, since it uses less digits than its factorization.

11573217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285919 (or 1285916 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 11573217 is about 3401.9431212176. The cubic root of 11573217 is about 226.1958844150.

The spelling of 11573217 in words is "eleven million, five hundred seventy-three thousand, two hundred seventeen".