47505312 has 48 divisors (see below), whose sum is σ = 138559680. Its totient is φ = 15834816.

The previous prime is 47505287. The next prime is 47505317. The reversal of 47505312 is 21350574.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (47505317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26628 + ... + 28355.

It is an arithmetic number, because the mean of its divisors is an integer number (2886660).

Almost surely, 2^47505312 is an apocalyptic number.

It is an amenable number.

47505312 is an abundant number, since it is smaller than the sum of its proper divisors (91054368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47505312 is a wasteful number, since it uses less digits than its factorization.

47505312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55002 (or 54988 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 47505312 is about 6892.4097382556. The cubic root of 47505312 is about 362.1713218959.

Adding to 47505312 its reverse (21350574), we get a palindrome (68855886).

The spelling of 47505312 in words is "forty-seven million, five hundred five thousand, three hundred twelve".