47156223 has 4 divisors (see below), whose sum is σ = 62874968. Its totient is φ = 31437480.

The previous prime is 47156209. The next prime is 47156227. The reversal of 47156223 is 32265174.

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

It is not a de Polignac number, because 47156223 - 2¹⁴ = 47139839 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 (47156227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7859368 + ... + 7859373.

It is an arithmetic number, because the mean of its divisors is an integer number (15718742).

Almost surely, 2^47156223 is an apocalyptic number.

47156223 is a deficient number, since it is larger than the sum of its proper divisors (15718745).

47156223 is a wasteful number, since it uses less digits than its factorization.

47156223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15718744.

The product of its digits is 10080, while the sum is 30.

The square root of 47156223 is about 6867.0388814976. The cubic root of 47156223 is about 361.2820109483.

The spelling of 47156223 in words is "forty-seven million, one hundred fifty-six thousand, two hundred twenty-three".