51986267 has 2 divisors, whose sum is σ = 51986268. Its totient is φ = 51986266.

The previous prime is 51986243. The next prime is 51986273. The reversal of 51986267 is 76268915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51986267 - 2⁶ = 51986203 is a prime.

It is not a weakly prime, because it can be changed into another prime (51986227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25993133 + 25993134.

It is an arithmetic number, because the mean of its divisors is an integer number (25993134).

Almost surely, 2^51986267 is an apocalyptic number.

51986267 is a deficient number, since it is larger than the sum of its proper divisors (1).

51986267 is an equidigital number, since it uses as much as digits as its factorization.

51986267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 51986267 is about 7210.1502758264. The cubic root of 51986267 is about 373.2182547274.

The spelling of 51986267 in words is "fifty-one million, nine hundred eighty-six thousand, two hundred sixty-seven".