47211117 has 4 divisors (see below), whose sum is σ = 62948160. Its totient is φ = 31474076.

The previous prime is 47211113. The next prime is 47211163. The reversal of 47211117 is 71111274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47211117 - 2² = 47211113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47211113) 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, 7868517 + ... + 7868522.

It is an arithmetic number, because the mean of its divisors is an integer number (15737040).

Almost surely, 2^47211117 is an apocalyptic number.

It is an amenable number.

47211117 is a deficient number, since it is larger than the sum of its proper divisors (15737043).

47211117 is a wasteful number, since it uses less digits than its factorization.

47211117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15737042.

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

The square root of 47211117 is about 6871.0346382477. The cubic root of 47211117 is about 361.4221446213.

The spelling of 47211117 in words is "forty-seven million, two hundred eleven thousand, one hundred seventeen".