75222031 has 2 divisors, whose sum is σ = 75222032. Its totient is φ = 75222030.

The previous prime is 75222023. The next prime is 75222079. The reversal of 75222031 is 13022257.

It is a weak prime.

It is an emirp because it is prime and its reverse (13022257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75222031 - 2³ = 75222023 is a prime.

It is a super-2 number, since 2×75222031² = 11316707895529922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75221993 and 75222011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75222011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37611015 + 37611016.

It is an arithmetic number, because the mean of its divisors is an integer number (37611016).

Almost surely, 2^75222031 is an apocalyptic number.

75222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

75222031 is an equidigital number, since it uses as much as digits as its factorization.

75222031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 75222031 is about 8673.0635302643. The cubic root of 75222031 is about 422.1320742161.

Adding to 75222031 its reverse (13022257), we get a palindrome (88244288).

The spelling of 75222031 in words is "seventy-five million, two hundred twenty-two thousand, thirty-one".