47871811 has 8 divisors (see below), whose sum is σ = 54267920. Its totient is φ = 41863392.

The previous prime is 47871793. The next prime is 47871823. The reversal of 47871811 is 11817874.

47871811 = T₄₉₅ + T₄₉₆ + ... + T₇₄₁.

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 47871811 - 2⁷ = 47871683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47871841) 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, 96660 + ... + 97153.

It is an arithmetic number, because the mean of its divisors is an integer number (6783490).

Almost surely, 2^47871811 is an apocalyptic number.

47871811 is a deficient number, since it is larger than the sum of its proper divisors (6396109).

47871811 is a wasteful number, since it uses less digits than its factorization.

47871811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193845.

The product of its digits is 12544, while the sum is 37.

The square root of 47871811 is about 6918.9458012041. The cubic root of 47871811 is about 363.1003094847.

The spelling of 47871811 in words is "forty-seven million, eight hundred seventy-one thousand, eight hundred eleven".