75325231 has 2 divisors, whose sum is σ = 75325232. Its totient is φ = 75325230.

The previous prime is 75325189. The next prime is 75325247. The reversal of 75325231 is 13252357.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75325231 is a prime.

It is a super-2 number, since 2×75325231² = 11347780850406722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75325231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75325331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37662615 + 37662616.

It is an arithmetic number, because the mean of its divisors is an integer number (37662616).

Almost surely, 2^75325231 is an apocalyptic number.

75325231 is a deficient number, since it is larger than the sum of its proper divisors (1).

75325231 is an equidigital number, since it uses as much as digits as its factorization.

75325231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 28.

The square root of 75325231 is about 8679.0109459546. The cubic root of 75325231 is about 422.3250324149.

Adding to 75325231 its reverse (13252357), we get a palindrome (88577588).

The spelling of 75325231 in words is "seventy-five million, three hundred twenty-five thousand, two hundred thirty-one".