51827131 has 2 divisors, whose sum is σ = 51827132. Its totient is φ = 51827130.

The previous prime is 51827129. The next prime is 51827141. The reversal of 51827131 is 13172815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51827131 - 2¹ = 51827129 is a prime.

It is a super-2 number, since 2×51827131² = 5372103015382322, which contains 22 as substring.

Together with 51827129, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51827131.

It is not a weakly prime, because it can be changed into another prime (51827141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25913565 + 25913566.

It is an arithmetic number, because the mean of its divisors is an integer number (25913566).

Almost surely, 2^51827131 is an apocalyptic number.

51827131 is a deficient number, since it is larger than the sum of its proper divisors (1).

51827131 is an equidigital number, since it uses as much as digits as its factorization.

51827131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 28.

The square root of 51827131 is about 7199.1062639747. The cubic root of 51827131 is about 372.8370440135.

Adding to 51827131 its reverse (13172815), we get a palindrome (64999946).

The spelling of 51827131 in words is "fifty-one million, eight hundred twenty-seven thousand, one hundred thirty-one".