47564771 has 4 divisors (see below), whose sum is σ = 50068200. Its totient is φ = 45061344.

The previous prime is 47564761. The next prime is 47564791. The reversal of 47564771 is 17746574.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47564771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47564711) 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, 1251686 + ... + 1251723.

It is an arithmetic number, because the mean of its divisors is an integer number (12517050).

Almost surely, 2^47564771 is an apocalyptic number.

47564771 is a deficient number, since it is larger than the sum of its proper divisors (2503429).

47564771 is a wasteful number, since it uses less digits than its factorization.

47564771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503428.

The product of its digits is 164640, while the sum is 41.

The square root of 47564771 is about 6896.7217574729. The cubic root of 47564771 is about 362.3223602088.

The spelling of 47564771 in words is "forty-seven million, five hundred sixty-four thousand, seven hundred seventy-one".