75422947 has 2 divisors, whose sum is σ = 75422948. Its totient is φ = 75422946.

The previous prime is 75422923. The next prime is 75422953. The reversal of 75422947 is 74922457.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75422947 - 2²³ = 67034339 is a prime.

It is not a weakly prime, because it can be changed into another prime (75422917) 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, 37711473 + 37711474.

It is an arithmetic number, because the mean of its divisors is an integer number (37711474).

Almost surely, 2^75422947 is an apocalyptic number.

75422947 is a deficient number, since it is larger than the sum of its proper divisors (1).

75422947 is an equidigital number, since it uses as much as digits as its factorization.

75422947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 75422947 is about 8684.6385647303. The cubic root of 75422947 is about 422.5075745290.

The spelling of 75422947 in words is "seventy-five million, four hundred twenty-two thousand, nine hundred forty-seven".