75000047 has 2 divisors, whose sum is σ = 75000048. Its totient is φ = 75000046.

The previous prime is 75000031. The next prime is 75000071. The reversal of 75000047 is 74000057.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (74000057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75000047 - 2⁴ = 75000031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74999986 and 75000031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75000007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37500023 + 37500024.

It is an arithmetic number, because the mean of its divisors is an integer number (37500024).

Almost surely, 2^75000047 is an apocalyptic number.

75000047 is a deficient number, since it is larger than the sum of its proper divisors (1).

75000047 is an equidigital number, since it uses as much as digits as its factorization.

75000047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 75000047 is about 8660.2567513902. The cubic root of 75000047 is about 421.7164207427.

The spelling of 75000047 in words is "seventy-five million, forty-seven", and thus it is an aban number and an uban number.