47257143 has 4 divisors (see below), whose sum is σ = 63009528. Its totient is φ = 31504760.

The previous prime is 47257117. The next prime is 47257151. The reversal of 47257143 is 34175274.

47257143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47257143 - 2²² = 43062839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47257163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7876188 + ... + 7876193.

It is an arithmetic number, because the mean of its divisors is an integer number (15752382).

Almost surely, 2^47257143 is an apocalyptic number.

47257143 is a deficient number, since it is larger than the sum of its proper divisors (15752385).

47257143 is a wasteful number, since it uses less digits than its factorization.

47257143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15752384.

The product of its digits is 23520, while the sum is 33.

The square root of 47257143 is about 6874.3830995952. The cubic root of 47257143 is about 361.5395563234.

The spelling of 47257143 in words is "forty-seven million, two hundred fifty-seven thousand, one hundred forty-three".