47218051 has 2 divisors, whose sum is σ = 47218052. Its totient is φ = 47218050.

The previous prime is 47218007. The next prime is 47218069. The reversal of 47218051 is 15081274.

47218051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47218051 is a prime.

It is not a weakly prime, because it can be changed into another prime (47218001) by changing a digit.

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 as a sum of consecutive naturals, namely, 23609025 + 23609026.

It is an arithmetic number, because the mean of its divisors is an integer number (23609026).

Almost surely, 2^47218051 is an apocalyptic number.

47218051 is a deficient number, since it is larger than the sum of its proper divisors (1).

47218051 is an equidigital number, since it uses as much as digits as its factorization.

47218051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 47218051 is about 6871.5392016636. The cubic root of 47218051 is about 361.4398380421.

The spelling of 47218051 in words is "forty-seven million, two hundred eighteen thousand, fifty-one".