2602321 has 8 divisors (see below), whose sum is σ = 2718824. Its totient is φ = 2488320.

The previous prime is 2602319. The next prime is 2602331. The reversal of 2602321 is 1232062.

It can be written as a sum of positive squares in 4 ways, for example, as 540225 + 2062096 = 735^2 + 1436^2 .

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

It is a 5-Lehmer number, since φ(2602321) divides (2602321-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 2602321 - 2¹ = 2602319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2602295 and 2602304.

It is not an unprimeable number, because it can be changed into a prime (2602331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1681 + ... + 2833.

It is an arithmetic number, because the mean of its divisors is an integer number (339853).

2^2602321 is an apocalyptic number.

It is an amenable number.

2602321 is a deficient number, since it is larger than the sum of its proper divisors (116503).

2602321 is a wasteful number, since it uses less digits than its factorization.

2602321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2602321 is about 1613.1711006586. The cubic root of 2602321 is about 137.5477916513.

Adding to 2602321 its reverse (1232062), we get a palindrome (3834383).

The spelling of 2602321 in words is "two million, six hundred two thousand, three hundred twenty-one".