47001217 has 4 divisors (see below), whose sum is σ = 47017476. Its totient is φ = 46984960.

The previous prime is 47001191. The next prime is 47001221. The reversal of 47001217 is 71210074.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23030401 + 23970816 = 4799^2 + 4896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47001217 is a prime.

It is a super-2 number, since 2×47001217² = 4418228798962178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47001817) 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, 2488 + ... + 10009.

It is an arithmetic number, because the mean of its divisors is an integer number (11754369).

Almost surely, 2^47001217 is an apocalyptic number.

It is an amenable number.

47001217 is a deficient number, since it is larger than the sum of its proper divisors (16259).

47001217 is a wasteful number, since it uses less digits than its factorization.

47001217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16258.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 47001217 is about 6855.7433586738. The cubic root of 47001217 is about 360.8857228390.

The spelling of 47001217 in words is "forty-seven million, one thousand, two hundred seventeen".