47108881 has 4 divisors (see below), whose sum is σ = 48382132. Its totient is φ = 45835632.

The previous prime is 47108869. The next prime is 47108903. The reversal of 47108881 is 18880174.

47108881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18880174 = 2 ⋅9440087.

It can be written as a sum of positive squares in 2 ways, for example, as 17297281 + 29811600 = 4159^2 + 5460^2 .

It is a cyclic number.

It is not a de Polignac number, because 47108881 - 2⁵ = 47108849 is a prime.

It is a super-2 number, since 2×47108881² = 4438493338144322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1273213 = 47108881 / (4 + 7 + 1 + 0 + 8 + 8 + 8 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47108881.

It is not an unprimeable number, because it can be changed into a prime (47108821) 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 3 ways as a sum of consecutive naturals, for example, 636570 + ... + 636643.

It is an arithmetic number, because the mean of its divisors is an integer number (12095533).

Almost surely, 2^47108881 is an apocalyptic number.

It is an amenable number.

47108881 is a deficient number, since it is larger than the sum of its proper divisors (1273251).

47108881 is a wasteful number, since it uses less digits than its factorization.

47108881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273250.

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 47108881 is about 6863.5909697475. The cubic root of 47108881 is about 361.1610686930.

The spelling of 47108881 in words is "forty-seven million, one hundred eight thousand, eight hundred eighty-one".