47305047 has 4 divisors (see below), whose sum is σ = 63073400. Its totient is φ = 31536696.

The previous prime is 47305007. The next prime is 47305081. The reversal of 47305047 is 74050374.

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

It is a de Polignac number, because none of the positive numbers 2^k-47305047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47305007) 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, 7884172 + ... + 7884177.

It is an arithmetic number, because the mean of its divisors is an integer number (15768350).

Almost surely, 2^47305047 is an apocalyptic number.

47305047 is a deficient number, since it is larger than the sum of its proper divisors (15768353).

47305047 is a wasteful number, since it uses less digits than its factorization.

47305047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15768352.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 47305047 is about 6877.8664569763. The cubic root of 47305047 is about 361.6616778413.

The spelling of 47305047 in words is "forty-seven million, three hundred five thousand, forty-seven".