51858271 has 2 divisors, whose sum is σ = 51858272. Its totient is φ = 51858270.

The previous prime is 51858263. The next prime is 51858281. The reversal of 51858271 is 17285815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51858271 - 2³ = 51858263 is a prime.

It is a super-2 number, since 2×51858271² = 5378560542218882, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51858271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51858241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25929135 + 25929136.

It is an arithmetic number, because the mean of its divisors is an integer number (25929136).

Almost surely, 2^51858271 is an apocalyptic number.

51858271 is a deficient number, since it is larger than the sum of its proper divisors (1).

51858271 is an equidigital number, since it uses as much as digits as its factorization.

51858271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22400, while the sum is 37.

The square root of 51858271 is about 7201.2687076653. The cubic root of 51858271 is about 372.9117013137.

It can be divided in two parts, 5185 and 8271, that added together give a square (13456 = 116²).

The spelling of 51858271 in words is "fifty-one million, eight hundred fifty-eight thousand, two hundred seventy-one".