51206047 has 2 divisors, whose sum is σ = 51206048. Its totient is φ = 51206046.

The previous prime is 51205997. The next prime is 51206081. The reversal of 51206047 is 74060215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51206047 - 2⁷ = 51205919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51206087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25603023 + 25603024.

It is an arithmetic number, because the mean of its divisors is an integer number (25603024).

Almost surely, 2^51206047 is an apocalyptic number.

51206047 is a deficient number, since it is larger than the sum of its proper divisors (1).

51206047 is an equidigital number, since it uses as much as digits as its factorization.

51206047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 51206047 is about 7155.8400624944. The cubic root of 51206047 is about 371.3417247009.

The spelling of 51206047 in words is "fifty-one million, two hundred six thousand, forty-seven".