75271321 has 8 divisors (see below), whose sum is σ = 76225184. Its totient is φ = 74321280.

The previous prime is 75271319. The next prime is 75271403. The reversal of 75271321 is 12317257.

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 75271321 - 2¹ = 75271319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75271321.

It is not an unprimeable number, because it can be changed into a prime (75271921) 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 7 ways as a sum of consecutive naturals, for example, 66466 + ... + 67588.

It is an arithmetic number, because the mean of its divisors is an integer number (9528148).

Almost surely, 2^75271321 is an apocalyptic number.

It is an amenable number.

75271321 is a deficient number, since it is larger than the sum of its proper divisors (953863).

75271321 is a wasteful number, since it uses less digits than its factorization.

75271321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911.

The product of its digits is 2940, while the sum is 28.

The square root of 75271321 is about 8675.9046214213. The cubic root of 75271321 is about 422.2242561947.

Adding to 75271321 its reverse (12317257), we get a palindrome (87588578).

The spelling of 75271321 in words is "seventy-five million, two hundred seventy-one thousand, three hundred twenty-one".