47065145 has 4 divisors (see below), whose sum is σ = 56478180. Its totient is φ = 37652112.

The previous prime is 47065063. The next prime is 47065159. The reversal of 47065145 is 54156074.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8922169 + 38142976 = 2987^2 + 6176^2 .

It is a cyclic number.

It is not a de Polignac number, because 47065145 - 2¹⁴ = 47048761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4706510 + ... + 4706519.

It is an arithmetic number, because the mean of its divisors is an integer number (14119545).

Almost surely, 2^47065145 is an apocalyptic number.

It is an amenable number.

47065145 is a deficient number, since it is larger than the sum of its proper divisors (9413035).

47065145 is an equidigital number, since it uses as much as digits as its factorization.

47065145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9413034.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 47065145 is about 6860.4041426143. The cubic root of 47065145 is about 361.0492664811.

The spelling of 47065145 in words is "forty-seven million, sixty-five thousand, one hundred forty-five".