47500081 has 2 divisors, whose sum is σ = 47500082. Its totient is φ = 47500080.

The previous prime is 47500051. The next prime is 47500139. The reversal of 47500081 is 18000574.

47500081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45495025 + 2005056 = 6745^2 + 1416^2 .

It is a cyclic number.

It is not a de Polignac number, because 47500081 - 2⁷ = 47499953 is a prime.

It is a super-2 number, since 2×47500081² = 4512515390013122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47500001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23750040 + 23750041.

It is an arithmetic number, because the mean of its divisors is an integer number (23750041).

Almost surely, 2^47500081 is an apocalyptic number.

It is an amenable number.

47500081 is a deficient number, since it is larger than the sum of its proper divisors (1).

47500081 is an equidigital number, since it uses as much as digits as its factorization.

47500081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 47500081 is about 6892.0302524002. The cubic root of 47500081 is about 362.1580280301.

The spelling of 47500081 in words is "forty-seven million, five hundred thousand, eighty-one".