75638273 has 2 divisors, whose sum is σ = 75638274. Its totient is φ = 75638272.

The previous prime is 75638257. The next prime is 75638281. The reversal of 75638273 is 37283657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51940849 + 23697424 = 7207^2 + 4868^2 .

It is an emirp because it is prime and its reverse (37283657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75638273 - 2⁴ = 75638257 is a prime.

It is a super-2 number, since 2×75638273² = 11442296684845058, 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 75638273.

It is not a weakly prime, because it can be changed into another prime (75638203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37819136 + 37819137.

It is an arithmetic number, because the mean of its divisors is an integer number (37819137).

Almost surely, 2^75638273 is an apocalyptic number.

It is an amenable number.

75638273 is a deficient number, since it is larger than the sum of its proper divisors (1).

75638273 is an equidigital number, since it uses as much as digits as its factorization.

75638273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 41.

The square root of 75638273 is about 8697.0266758243. The cubic root of 75638273 is about 422.9092667178.

The spelling of 75638273 in words is "seventy-five million, six hundred thirty-eight thousand, two hundred seventy-three".