51858671 has 2 divisors, whose sum is σ = 51858672. Its totient is φ = 51858670.

The previous prime is 51858661. The next prime is 51858673. The reversal of 51858671 is 17685815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51858671 - 2¹⁰ = 51857647 is a prime.

Together with 51858673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51858673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25929335 + 25929336.

It is an arithmetic number, because the mean of its divisors is an integer number (25929336).

Almost surely, 2^51858671 is an apocalyptic number.

51858671 is a deficient number, since it is larger than the sum of its proper divisors (1).

51858671 is an equidigital number, since it uses as much as digits as its factorization.

51858671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 41.

The square root of 51858671 is about 7201.2964804957. The cubic root of 51858671 is about 372.9126601084.

The spelling of 51858671 in words is "fifty-one million, eight hundred fifty-eight thousand, six hundred seventy-one".