47915081 has 2 divisors, whose sum is σ = 47915082. Its totient is φ = 47915080.

The previous prime is 47915059. The next prime is 47915099. The reversal of 47915081 is 18051974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47389456 + 525625 = 6884^2 + 725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47915081 is a prime.

It is a super-2 number, since 2×47915081² = 4591709974473122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47915281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23957540 + 23957541.

It is an arithmetic number, because the mean of its divisors is an integer number (23957541).

Almost surely, 2^47915081 is an apocalyptic number.

It is an amenable number.

47915081 is a deficient number, since it is larger than the sum of its proper divisors (1).

47915081 is an equidigital number, since it uses as much as digits as its factorization.

47915081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 47915081 is about 6922.0720163835. The cubic root of 47915081 is about 363.2096753012.

The spelling of 47915081 in words is "forty-seven million, nine hundred fifteen thousand, eighty-one".