47151791 has 2 divisors, whose sum is σ = 47151792. Its totient is φ = 47151790.

The previous prime is 47151781. The next prime is 47151799. The reversal of 47151791 is 19715174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47151791 - 2¹⁰ = 47150767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47151799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23575895 + 23575896.

It is an arithmetic number, because the mean of its divisors is an integer number (23575896).

Almost surely, 2^47151791 is an apocalyptic number.

47151791 is a deficient number, since it is larger than the sum of its proper divisors (1).

47151791 is an equidigital number, since it uses as much as digits as its factorization.

47151791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 35.

The square root of 47151791 is about 6866.7161729607. The cubic root of 47151791 is about 361.2706921733.

The spelling of 47151791 in words is "forty-seven million, one hundred fifty-one thousand, seven hundred ninety-one".