47172111 has 16 divisors (see below), whose sum is σ = 74201088. Its totient is φ = 26085600.

The previous prime is 47172091. The next prime is 47172113. The reversal of 47172111 is 11127174.

It is not a de Polignac number, because 47172111 - 2⁷ = 47171983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47172113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35580 + ... + 36881.

It is an arithmetic number, because the mean of its divisors is an integer number (4637568).

Almost surely, 2^47172111 is an apocalyptic number.

47172111 is a deficient number, since it is larger than the sum of its proper divisors (27028977).

47172111 is a wasteful number, since it uses less digits than its factorization.

47172111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72502.

The product of its digits is 392, while the sum is 24.

The square root of 47172111 is about 6868.1956145701. The cubic root of 47172111 is about 361.3225810908.

Adding to 47172111 its reverse (11127174), we get a palindrome (58299285).

The spelling of 47172111 in words is "forty-seven million, one hundred seventy-two thousand, one hundred eleven".