51858263 has 2 divisors, whose sum is σ = 51858264. Its totient is φ = 51858262.

The previous prime is 51858241. The next prime is 51858271. The reversal of 51858263 is 36285815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51858263 - 2¹⁸ = 51596119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51858203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25929131 + 25929132.

It is an arithmetic number, because the mean of its divisors is an integer number (25929132).

Almost surely, 2^51858263 is an apocalyptic number.

51858263 is a deficient number, since it is larger than the sum of its proper divisors (1).

51858263 is an equidigital number, since it uses as much as digits as its factorization.

51858263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 38.

The square root of 51858263 is about 7201.2681522076. The cubic root of 51858263 is about 372.9116821378.

The spelling of 51858263 in words is "fifty-one million, eight hundred fifty-eight thousand, two hundred sixty-three".