47211811 has 8 divisors (see below), whose sum is σ = 48109824. Its totient is φ = 46321800.

The previous prime is 47211803. The next prime is 47211851. The reversal of 47211811 is 11811274.

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 47211811 - 2³ = 47211803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47211851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10650 + ... + 14416.

It is an arithmetic number, because the mean of its divisors is an integer number (6013728).

Almost surely, 2^47211811 is an apocalyptic number.

47211811 is a deficient number, since it is larger than the sum of its proper divisors (898013).

47211811 is a wasteful number, since it uses less digits than its factorization.

47211811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001.

The product of its digits is 448, while the sum is 25.

The square root of 47211811 is about 6871.0851399179. The cubic root of 47211811 is about 361.4239155724.

The spelling of 47211811 in words is "forty-seven million, two hundred eleven thousand, eight hundred eleven".