752221 has 4 divisors (see below), whose sum is σ = 758272. Its totient is φ = 746172.

The previous prime is 752207. The next prime is 752251. The reversal of 752221 is 122257.

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: 122257 = 179 ⋅683.

It is a cyclic number.

It is not a de Polignac number, because 752221 - 2⁵ = 752189 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (752201) 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 3 ways as a sum of consecutive naturals, for example, 2835 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (189568).

2⁷⁵²²²¹ is an apocalyptic number.

It is an amenable number.

752221 is a deficient number, since it is larger than the sum of its proper divisors (6051).

752221 is a wasteful number, since it uses less digits than its factorization.

752221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050.

The product of its digits is 280, while the sum is 19.

The square root of 752221 is about 867.3067508097. The cubic root of 752221 is about 90.9456262543.

Adding to 752221 its reverse (122257), we get a palindrome (874478).

The spelling of 752221 in words is "seven hundred fifty-two thousand, two hundred twenty-one".