47856587 has 4 divisors (see below), whose sum is σ = 47926536. Its totient is φ = 47786640.

The previous prime is 47856551. The next prime is 47856607. The reversal of 47856587 is 78565874.

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 47856587 - 2⁸ = 47856331 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47853587) 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, 33938 + ... + 35319.

It is an arithmetic number, because the mean of its divisors is an integer number (11981634).

Almost surely, 2^47856587 is an apocalyptic number.

47856587 is a deficient number, since it is larger than the sum of its proper divisors (69949).

47856587 is an equidigital number, since it uses as much as digits as its factorization.

47856587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69948.

The product of its digits is 1881600, while the sum is 50.

The square root of 47856587 is about 6917.8455461220. The cubic root of 47856587 is about 363.0618148391.

The spelling of 47856587 in words is "forty-seven million, eight hundred fifty-six thousand, five hundred eighty-seven".