2751321 has 8 divisors (see below), whose sum is σ = 3720384. Its totient is φ = 1808240.

The previous prime is 2751319. The next prime is 2751323. The reversal of 2751321 is 1231572.

It is an interprime number because it is at equal distance from previous prime (2751319) and next prime (2751323).

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 2751321 - 2¹ = 2751319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2751323) 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, 6246 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (465048).

2^2751321 is an apocalyptic number.

It is an amenable number.

2751321 is a deficient number, since it is larger than the sum of its proper divisors (969063).

2751321 is a wasteful number, since it uses less digits than its factorization.

2751321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12991.

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

The square root of 2751321 is about 1658.7106438436. The cubic root of 2751321 is about 140.1243962384.

Adding to 2751321 its reverse (1231572), we get a palindrome (3982893).

It can be divided in two parts, 275 and 1321, that added together give a triangular number (1596 = T₅₆).

The spelling of 2751321 in words is "two million, seven hundred fifty-one thousand, three hundred twenty-one".