2152317 has 8 divisors (see below), whose sum is σ = 2994624. Its totient is φ = 1372448.

The previous prime is 2152309. The next prime is 2152321. The reversal of 2152317 is 7132512.

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

It is a cyclic number.

It is not a de Polignac number, because 2152317 - 2³ = 2152309 is a prime.

2152317 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2152293 and 2152302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15528 + ... + 15665.

It is an arithmetic number, because the mean of its divisors is an integer number (374328).

2^2152317 is an apocalyptic number.

It is an amenable number.

2152317 is a deficient number, since it is larger than the sum of its proper divisors (842307).

2152317 is a wasteful number, since it uses less digits than its factorization.

2152317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31219.

The product of its digits is 420, while the sum is 21.

The square root of 2152317 is about 1467.0777075534. The cubic root of 2152317 is about 129.1126352347.

Adding to 2152317 its reverse (7132512), we get a palindrome (9284829).

The spelling of 2152317 in words is "two million, one hundred fifty-two thousand, three hundred seventeen".