47691559 has 2 divisors, whose sum is σ = 47691560. Its totient is φ = 47691558.

The previous prime is 47691499. The next prime is 47691593. The reversal of 47691559 is 95519674.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47691559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47691659) 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, 23845779 + 23845780.

It is an arithmetic number, because the mean of its divisors is an integer number (23845780).

Almost surely, 2^47691559 is an apocalyptic number.

47691559 is a deficient number, since it is larger than the sum of its proper divisors (1).

47691559 is an equidigital number, since it uses as much as digits as its factorization.

47691559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 46.

The square root of 47691559 is about 6905.9075435456. The cubic root of 47691559 is about 362.6440084191.

It can be divided in two parts, 4769 and 1559, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 47691559 in words is "forty-seven million, six hundred ninety-one thousand, five hundred fifty-nine".