47085317 has 4 divisors (see below), whose sum is σ = 47542560. Its totient is φ = 46628076.

The previous prime is 47085281. The next prime is 47085323. The reversal of 47085317 is 71358074.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71358074 = 2 ⋅35679037.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47085317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47085397) 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, 228467 + ... + 228672.

It is an arithmetic number, because the mean of its divisors is an integer number (11885640).

Almost surely, 2^47085317 is an apocalyptic number.

It is an amenable number.

47085317 is a deficient number, since it is larger than the sum of its proper divisors (457243).

47085317 is a wasteful number, since it uses less digits than its factorization.

47085317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457242.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 47085317 is about 6861.8741608980. The cubic root of 47085317 is about 361.1008407090.

The spelling of 47085317 in words is "forty-seven million, eighty-five thousand, three hundred seventeen".