47311745 has 24 divisors (see below), whose sum is σ = 62813688. Its totient is φ = 34007040.

The previous prime is 47311741. The next prime is 47311753. The reversal of 47311745 is 54711374.

47311745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 46566976 + 744769 = 6824^2 + 863^2 .

It is not a de Polignac number, because 47311745 - 2² = 47311741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47311741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109049 + ... + 109481.

It is an arithmetic number, because the mean of its divisors is an integer number (2617237).

Almost surely, 2^47311745 is an apocalyptic number.

It is an amenable number.

47311745 is a deficient number, since it is larger than the sum of its proper divisors (15501943).

47311745 is a wasteful number, since it uses less digits than its factorization.

47311745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 492 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 47311745 is about 6878.3533639964. The cubic root of 47311745 is about 361.6787464612.

The spelling of 47311745 in words is "forty-seven million, three hundred eleven thousand, seven hundred forty-five".