47487147 has 4 divisors (see below), whose sum is σ = 63316200. Its totient is φ = 31658096.

The previous prime is 47487131. The next prime is 47487163. The reversal of 47487147 is 74178474.

47487147 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 an interprime number because it is at equal distance from previous prime (47487131) and next prime (47487163).

It is a cyclic number.

It is not a de Polignac number, because 47487147 - 2⁴ = 47487131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47487099 and 47487108.

It is not an unprimeable number, because it can be changed into a prime (47487247) 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, 7914522 + ... + 7914527.

It is an arithmetic number, because the mean of its divisors is an integer number (15829050).

Almost surely, 2^47487147 is an apocalyptic number.

47487147 is a deficient number, since it is larger than the sum of its proper divisors (15829053).

47487147 is a wasteful number, since it uses less digits than its factorization.

47487147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15829052.

The product of its digits is 175616, while the sum is 42.

The square root of 47487147 is about 6891.0918583342. The cubic root of 47487147 is about 362.1251538605.

The spelling of 47487147 in words is "forty-seven million, four hundred eighty-seven thousand, one hundred forty-seven".