755321 has 4 divisors (see below), whose sum is σ = 863232. Its totient is φ = 647412.

The previous prime is 755317. The next prime is 755329. The reversal of 755321 is 123557.

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 a cyclic number.

It is not a de Polignac number, because 755321 - 2² = 755317 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (755329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53945 + ... + 53958.

It is an arithmetic number, because the mean of its divisors is an integer number (215808).

2⁷⁵⁵³²¹ is an apocalyptic number.

It is an amenable number.

755321 is a deficient number, since it is larger than the sum of its proper divisors (107911).

755321 is a wasteful number, since it uses less digits than its factorization.

755321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107910.

The product of its digits is 1050, while the sum is 23.

The square root of 755321 is about 869.0920549631. The cubic root of 755321 is about 91.0703879195.

Adding to 755321 its reverse (123557), we get a palindrome (878878).

The spelling of 755321 in words is "seven hundred fifty-five thousand, three hundred twenty-one".