47018291 has 4 divisors (see below), whose sum is σ = 47334000. Its totient is φ = 46702584.

The previous prime is 47018269. The next prime is 47018297. The reversal of 47018291 is 19281074.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47018291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47018297) 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, 157631 + ... + 157928.

It is an arithmetic number, because the mean of its divisors is an integer number (11833500).

Almost surely, 2^47018291 is an apocalyptic number.

47018291 is a deficient number, since it is larger than the sum of its proper divisors (315709).

47018291 is a wasteful number, since it uses less digits than its factorization.

47018291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315708.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 47018291 is about 6856.9884789170. The cubic root of 47018291 is about 360.9294168626.

The spelling of 47018291 in words is "forty-seven million, eighteen thousand, two hundred ninety-one".