51315653 has 2 divisors, whose sum is σ = 51315654. Its totient is φ = 51315652.

The previous prime is 51315647. The next prime is 51315659. The reversal of 51315653 is 35651315.

It is a balanced prime because it is at equal distance from previous prime (51315647) and next prime (51315659).

It can be written as a sum of positive squares in only one way, i.e., 33616804 + 17698849 = 5798^2 + 4207^2 .

It is a cyclic number.

It is not a de Polignac number, because 51315653 - 2¹⁰ = 51314629 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51315659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25657826 + 25657827.

It is an arithmetic number, because the mean of its divisors is an integer number (25657827).

Almost surely, 2^51315653 is an apocalyptic number.

It is an amenable number.

51315653 is a deficient number, since it is larger than the sum of its proper divisors (1).

51315653 is an equidigital number, since it uses as much as digits as its factorization.

51315653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6750, while the sum is 29.

The square root of 51315653 is about 7163.4944684839. The cubic root of 51315653 is about 371.6064868903.

Adding to 51315653 its reverse (35651315), we get a palindrome (86966968).

The spelling of 51315653 in words is "fifty-one million, three hundred fifteen thousand, six hundred fifty-three".