2617321 has 4 divisors (see below), whose sum is σ = 2991232. Its totient is φ = 2243412.

The previous prime is 2617319. The next prime is 2617379. The reversal of 2617321 is 1237162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1237162 = 2 ⋅618581.

It is a cyclic number.

It is not a de Polignac number, because 2617321 - 2¹ = 2617319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2617292 and 2617301.

It is not an unprimeable number, because it can be changed into a prime (2617301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186945 + ... + 186958.

It is an arithmetic number, because the mean of its divisors is an integer number (747808).

2^2617321 is an apocalyptic number.

It is an amenable number.

2617321 is a deficient number, since it is larger than the sum of its proper divisors (373911).

2617321 is an equidigital number, since it uses as much as digits as its factorization.

2617321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373910.

The product of its digits is 504, while the sum is 22.

The square root of 2617321 is about 1617.8136481066. The cubic root of 2617321 is about 137.8115645595.

The spelling of 2617321 in words is "two million, six hundred seventeen thousand, three hundred twenty-one".