51586081 has 2 divisors, whose sum is σ = 51586082. Its totient is φ = 51586080.

The previous prime is 51586057. The next prime is 51586127. The reversal of 51586081 is 18068515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46785600 + 4800481 = 6840^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 51586081 - 2⁵ = 51586049 is a prime.

It is a super-2 number, since 2×51586081² = 5322247505877122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51586481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25793040 + 25793041.

It is an arithmetic number, because the mean of its divisors is an integer number (25793041).

Almost surely, 2^51586081 is an apocalyptic number.

It is an amenable number.

51586081 is a deficient number, since it is larger than the sum of its proper divisors (1).

51586081 is an equidigital number, since it uses as much as digits as its factorization.

51586081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 51586081 is about 7182.3450905676. The cubic root of 51586081 is about 372.2581190234.

The spelling of 51586081 in words is "fifty-one million, five hundred eighty-six thousand, eighty-one".