47015791 has 2 divisors, whose sum is σ = 47015792. Its totient is φ = 47015790.

The previous prime is 47015783. The next prime is 47015831. The reversal of 47015791 is 19751074.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47015791 - 2³ = 47015783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47015701) 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, 23507895 + 23507896.

It is an arithmetic number, because the mean of its divisors is an integer number (23507896).

Almost surely, 2^47015791 is an apocalyptic number.

47015791 is a deficient number, since it is larger than the sum of its proper divisors (1).

47015791 is an equidigital number, since it uses as much as digits as its factorization.

47015791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 47015791 is about 6856.8061807229. The cubic root of 47015791 is about 360.9230197810.

It can be divided in two parts, 470 and 15791, that added together give a palindrome (16261).

The spelling of 47015791 in words is "forty-seven million, fifteen thousand, seven hundred ninety-one".