47212771 has 8 divisors (see below), whose sum is σ = 49279104. Its totient is φ = 45190080.

The previous prime is 47212747. The next prime is 47212811. The reversal of 47212771 is 17721274.

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 47212771 - 2¹⁹ = 46688483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47212471) 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, 8691 + ... + 13036.

It is an arithmetic number, because the mean of its divisors is an integer number (6159888).

Almost surely, 2^47212771 is an apocalyptic number.

47212771 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

47212771 is the 4346-th heptagonal number.

47212771 is a deficient number, since it is larger than the sum of its proper divisors (2066333).

47212771 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 47212771 = (24717721)₁₁.

47212771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21821.

The product of its digits is 5488, while the sum is 31.

The square root of 47212771 is about 6871.1549975241. The cubic root of 47212771 is about 361.4263652745.

The spelling of 47212771 in words is "forty-seven million, two hundred twelve thousand, seven hundred seventy-one".