47056387 has 4 divisors (see below), whose sum is σ = 53778736. Its totient is φ = 40334040.

The previous prime is 47056363. The next prime is 47056403. The reversal of 47056387 is 78365074.

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 47056387 - 2¹¹ = 47054339 is a prime.

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

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (47056337) 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, 3361164 + ... + 3361177.

It is an arithmetic number, because the mean of its divisors is an integer number (13444684).

Almost surely, 2^47056387 is an apocalyptic number.

47056387 is a deficient number, since it is larger than the sum of its proper divisors (6722349).

47056387 is an equidigital number, since it uses as much as digits as its factorization.

47056387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6722348.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 47056387 is about 6859.7658123292. The cubic root of 47056387 is about 361.0268701080.

The spelling of 47056387 in words is "forty-seven million, fifty-six thousand, three hundred eighty-seven".