75222079 has 2 divisors, whose sum is σ = 75222080. Its totient is φ = 75222078.

The previous prime is 75222031. The next prime is 75222139. The reversal of 75222079 is 97022257.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75222079 is a prime.

It is a super-2 number, since 2×75222079² = 11316722338164482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75222019) 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, 37611039 + 37611040.

It is an arithmetic number, because the mean of its divisors is an integer number (37611040).

Almost surely, 2^75222079 is an apocalyptic number.

75222079 is a deficient number, since it is larger than the sum of its proper divisors (1).

75222079 is an equidigital number, since it uses as much as digits as its factorization.

75222079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 75222079 is about 8673.0662974521. The cubic root of 75222079 is about 422.1321640051.

The spelling of 75222079 in words is "seventy-five million, two hundred twenty-two thousand, seventy-nine".