47722765 has 8 divisors (see below), whose sum is σ = 57449880. Its totient is φ = 38056512.

The previous prime is 47722747. The next prime is 47722771. The reversal of 47722765 is 56722774.

It can be written as a sum of positive squares in 4 ways, for example, as 29929 + 47692836 = 173^2 + 6906^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47722765 - 2⁹ = 47722253 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 7 ways as a sum of consecutive naturals, for example, 13470 + ... + 16639.

It is an arithmetic number, because the mean of its divisors is an integer number (7181235).

Almost surely, 2^47722765 is an apocalyptic number.

It is an amenable number.

47722765 is a deficient number, since it is larger than the sum of its proper divisors (9727115).

47722765 is a wasteful number, since it uses less digits than its factorization.

47722765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30431.

The product of its digits is 164640, while the sum is 40.

The square root of 47722765 is about 6908.1665440260. The cubic root of 47722765 is about 362.7230874133.

Subtracting 47722765 from its reverse (56722774), we obtain a palindrome (9000009).

The spelling of 47722765 in words is "forty-seven million, seven hundred twenty-two thousand, seven hundred sixty-five".