47321765 has 16 divisors (see below), whose sum is σ = 59633280. Its totient is φ = 35999040.

The previous prime is 47321731. The next prime is 47321777. The reversal of 47321765 is 56712374.

It is not a de Polignac number, because 47321765 - 2⁸ = 47321509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7280 + ... + 12150.

It is an arithmetic number, because the mean of its divisors is an integer number (3727080).

Almost surely, 2^47321765 is an apocalyptic number.

It is an amenable number.

47321765 is a deficient number, since it is larger than the sum of its proper divisors (12311515).

47321765 is a wasteful number, since it uses less digits than its factorization.

47321765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972.

The product of its digits is 35280, while the sum is 35.

The square root of 47321765 is about 6879.0816974361. The cubic root of 47321765 is about 361.7042775792.

The spelling of 47321765 in words is "forty-seven million, three hundred twenty-one thousand, seven hundred sixty-five".