75327221 has 8 divisors (see below), whose sum is σ = 79859520. Its totient is φ = 70806208.

The previous prime is 75327199. The next prime is 75327223. The reversal of 75327221 is 12272357.

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 75327221 - 2⁶ = 75327157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75327223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13760 + ... + 18438.

It is an arithmetic number, because the mean of its divisors is an integer number (9982440).

Almost surely, 2^75327221 is an apocalyptic number.

It is an amenable number.

75327221 is a deficient number, since it is larger than the sum of its proper divisors (4532299).

75327221 is a wasteful number, since it uses less digits than its factorization.

75327221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643.

The product of its digits is 5880, while the sum is 29.

The square root of 75327221 is about 8679.1255895971. The cubic root of 75327221 is about 422.3287514849.

Adding to 75327221 its reverse (12272357), we get a palindrome (87599578).

The spelling of 75327221 in words is "seventy-five million, three hundred twenty-seven thousand, two hundred twenty-one".