51261053 has 2 divisors, whose sum is σ = 51261054. Its totient is φ = 51261052.

The previous prime is 51261047. The next prime is 51261061. The reversal of 51261053 is 35016215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50438404 + 822649 = 7102^2 + 907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51261053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51261013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25630526 + 25630527.

It is an arithmetic number, because the mean of its divisors is an integer number (25630527).

Almost surely, 2^51261053 is an apocalyptic number.

It is an amenable number.

51261053 is a deficient number, since it is larger than the sum of its proper divisors (1).

51261053 is an equidigital number, since it uses as much as digits as its factorization.

51261053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 51261053 is about 7159.6824650259. The cubic root of 51261053 is about 371.4746433340.

Adding to 51261053 its reverse (35016215), we get a palindrome (86277268).

The spelling of 51261053 in words is "fifty-one million, two hundred sixty-one thousand, fifty-three".