47540111 has 2 divisors, whose sum is σ = 47540112. Its totient is φ = 47540110.

The previous prime is 47540083. The next prime is 47540113. The reversal of 47540111 is 11104574.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47540111 is a prime.

Together with 47540113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47540113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23770055 + 23770056.

It is an arithmetic number, because the mean of its divisors is an integer number (23770056).

Almost surely, 2^47540111 is an apocalyptic number.

47540111 is a deficient number, since it is larger than the sum of its proper divisors (1).

47540111 is an equidigital number, since it uses as much as digits as its factorization.

47540111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 47540111 is about 6894.9337197685. The cubic root of 47540111 is about 362.2597339292.

Adding to 47540111 its reverse (11104574), we get a palindrome (58644685).

The spelling of 47540111 in words is "forty-seven million, five hundred forty thousand, one hundred eleven".