75460321 has 2 divisors, whose sum is σ = 75460322. Its totient is φ = 75460320.

The previous prime is 75460289. The next prime is 75460327. The reversal of 75460321 is 12306457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71216721 + 4243600 = 8439^2 + 2060^2 .

It is an emirp because it is prime and its reverse (12306457) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75460321 - 2⁵ = 75460289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75460321.

It is not a weakly prime, because it can be changed into another prime (75460327) 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 as a sum of consecutive naturals, namely, 37730160 + 37730161.

It is an arithmetic number, because the mean of its divisors is an integer number (37730161).

Almost surely, 2^75460321 is an apocalyptic number.

It is an amenable number.

75460321 is a deficient number, since it is larger than the sum of its proper divisors (1).

75460321 is an equidigital number, since it uses as much as digits as its factorization.

75460321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 75460321 is about 8686.7900285433. The cubic root of 75460321 is about 422.5773507761.

Adding to 75460321 its reverse (12306457), we get a palindrome (87766778).

It can be divided in two parts, 754 and 60321, that added together give a triangular number (61075 = T₃₄₉).

The spelling of 75460321 in words is "seventy-five million, four hundred sixty thousand, three hundred twenty-one".