47091 has 8 divisors (see below), whose sum is σ = 68544. Its totient is φ = 28520.

The previous prime is 47087. The next prime is 47093. The reversal of 47091 is 19074.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47091 - 2² = 47087 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (47093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (8568).

2⁴⁷⁰⁹¹ is an apocalyptic number.

47091 is a deficient number, since it is larger than the sum of its proper divisors (21453).

47091 is a wasteful number, since it uses less digits than its factorization.

47091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 47091 is about 217.0046082460. The cubic root of 47091 is about 36.1115367909. Note that the first 3 decimals are identical.

It can be divided in two parts, 470 and 91, that added together give a triangular number (561 = T₃₃).

The spelling of 47091 in words is "forty-seven thousand, ninety-one".