47591771 has 4 divisors (see below), whose sum is σ = 48126600. Its totient is φ = 47056944.

The previous prime is 47591759. The next prime is 47591779. The reversal of 47591771 is 17719574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17719574 = 2 ⋅8859787.

It is a cyclic number.

It is not a de Polignac number, because 47591771 - 2⁶ = 47591707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47591779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267281 + ... + 267458.

It is an arithmetic number, because the mean of its divisors is an integer number (12031650).

Almost surely, 2^47591771 is an apocalyptic number.

47591771 is a deficient number, since it is larger than the sum of its proper divisors (534829).

47591771 is an equidigital number, since it uses as much as digits as its factorization.

47591771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534828.

The product of its digits is 61740, while the sum is 41.

The square root of 47591771 is about 6898.6789315057. The cubic root of 47591771 is about 362.3909043089.

The spelling of 47591771 in words is "forty-seven million, five hundred ninety-one thousand, seven hundred seventy-one".