2752221 has 4 divisors (see below), whose sum is σ = 3669632. Its totient is φ = 1834812.

The previous prime is 2752219. The next prime is 2752223. The reversal of 2752221 is 1222572.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (2752219) and next prime (2752223).

It is not a de Polignac number, because 2752221 - 2¹ = 2752219 is a prime.

It is a D-number.

It is a Duffinian number.

2752221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2752223) 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, 458701 + ... + 458706.

It is an arithmetic number, because the mean of its divisors is an integer number (917408).

2^2752221 is an apocalyptic number.

It is an amenable number.

2752221 is a deficient number, since it is larger than the sum of its proper divisors (917411).

2752221 is an equidigital number, since it uses as much as digits as its factorization.

2752221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917410.

The product of its digits is 560, while the sum is 21.

The square root of 2752221 is about 1658.9819167188. The cubic root of 2752221 is about 140.1396735310.

Adding to 2752221 its reverse (1222572), we get a palindrome (3974793).

The spelling of 2752221 in words is "two million, seven hundred fifty-two thousand, two hundred twenty-one".