51043247 has 2 divisors, whose sum is σ = 51043248. Its totient is φ = 51043246.

The previous prime is 51043229. The next prime is 51043259. The reversal of 51043247 is 74234015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51043247 - 2⁶ = 51043183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51043207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25521623 + 25521624.

It is an arithmetic number, because the mean of its divisors is an integer number (25521624).

Almost surely, 2^51043247 is an apocalyptic number.

51043247 is a deficient number, since it is larger than the sum of its proper divisors (1).

51043247 is an equidigital number, since it uses as much as digits as its factorization.

51043247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 51043247 is about 7144.4556825555. The cubic root of 51043247 is about 370.9477698358.

The spelling of 51043247 in words is "fifty-one million, forty-three thousand, two hundred forty-seven".