47917145 has 32 divisors (see below), whose sum is σ = 62899200. Its totient is φ = 34928064.

The previous prime is 47917123. The next prime is 47917153. The reversal of 47917145 is 54171974.

47917145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 47917145 - 2⁶ = 47917081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47917099 and 47917108.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 465164 + ... + 465266.

It is an arithmetic number, because the mean of its divisors is an integer number (1965600).

Almost surely, 2^47917145 is an apocalyptic number.

It is an amenable number.

47917145 is a deficient number, since it is larger than the sum of its proper divisors (14982055).

47917145 is a wasteful number, since it uses less digits than its factorization.

47917145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its digits is 35280, while the sum is 38.

The square root of 47917145 is about 6922.2211030853. The cubic root of 47917145 is about 363.2148904581.

The spelling of 47917145 in words is "forty-seven million, nine hundred seventeen thousand, one hundred forty-five".