47897543 has 4 divisors (see below), whose sum is σ = 48337080. Its totient is φ = 47458008.

The previous prime is 47897539. The next prime is 47897561. The reversal of 47897543 is 34579874.

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

It is a cyclic number.

It is not a de Polignac number, because 47897543 - 2² = 47897539 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 (47897503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219605 + ... + 219822.

It is an arithmetic number, because the mean of its divisors is an integer number (12084270).

Almost surely, 2^47897543 is an apocalyptic number.

47897543 is a deficient number, since it is larger than the sum of its proper divisors (439537).

47897543 is a wasteful number, since it uses less digits than its factorization.

47897543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439536.

The product of its digits is 846720, while the sum is 47.

The square root of 47897543 is about 6920.8050832255. The cubic root of 47897543 is about 363.1653555832.

The spelling of 47897543 in words is "forty-seven million, eight hundred ninety-seven thousand, five hundred forty-three".