47181227 has 2 divisors, whose sum is σ = 47181228. Its totient is φ = 47181226.

The previous prime is 47181221. The next prime is 47181247. The reversal of 47181227 is 72218174.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47181227 - 2¹⁸ = 46919083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47181193 and 47181202.

It is not a weakly prime, because it can be changed into another prime (47181221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23590613 + 23590614.

It is an arithmetic number, because the mean of its divisors is an integer number (23590614).

Almost surely, 2^47181227 is an apocalyptic number.

47181227 is a deficient number, since it is larger than the sum of its proper divisors (1).

47181227 is an equidigital number, since it uses as much as digits as its factorization.

47181227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 32.

The square root of 47181227 is about 6868.8592211516. The cubic root of 47181227 is about 361.3458547613.

The spelling of 47181227 in words is "forty-seven million, one hundred eighty-one thousand, two hundred twenty-seven".