47148187 has 2 divisors, whose sum is σ = 47148188. Its totient is φ = 47148186.

The previous prime is 47148151. The next prime is 47148193. The reversal of 47148187 is 78184174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47148187 - 2¹¹ = 47146139 is a prime.

It is not a weakly prime, because it can be changed into another prime (47148107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23574093 + 23574094.

It is an arithmetic number, because the mean of its divisors is an integer number (23574094).

Almost surely, 2^47148187 is an apocalyptic number.

47148187 is a deficient number, since it is larger than the sum of its proper divisors (1).

47148187 is an equidigital number, since it uses as much as digits as its factorization.

47148187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50176, while the sum is 40.

The square root of 47148187 is about 6866.4537426535. The cubic root of 47148187 is about 361.2614874841.

The spelling of 47148187 in words is "forty-seven million, one hundred forty-eight thousand, one hundred eighty-seven".