75032231 has 4 divisors (see below), whose sum is σ = 75063600. Its totient is φ = 75000864.

The previous prime is 75032227. The next prime is 75032261. The reversal of 75032231 is 13223057.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75032231 - 2² = 75032227 is a prime.

It is a super-2 number, since 2×75032231² = 11259671377674722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75032197 and 75032206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75032201) 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, 11771 + ... + 16988.

It is an arithmetic number, because the mean of its divisors is an integer number (18765900).

Almost surely, 2^75032231 is an apocalyptic number.

75032231 is a deficient number, since it is larger than the sum of its proper divisors (31369).

75032231 is a wasteful number, since it uses less digits than its factorization.

75032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31368.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 75032231 is about 8662.1146956156. The cubic root of 75032231 is about 421.7767343953.

Adding to 75032231 its reverse (13223057), we get a palindrome (88255288).

The spelling of 75032231 in words is "seventy-five million, thirty-two thousand, two hundred thirty-one".