51530025653 has 2 divisors, whose sum is σ = 51530025654. Its totient is φ = 51530025652.

The previous prime is 51530025619. The next prime is 51530025671. The reversal of 51530025653 is 35652003515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51529908004 + 117649 = 227002^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 51530025653 - 2¹⁶ = 51529960117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51530022653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25765012826 + 25765012827.

It is an arithmetic number, because the mean of its divisors is an integer number (25765012827).

Almost surely, 2^51530025653 is an apocalyptic number.

It is an amenable number.

51530025653 is a deficient number, since it is larger than the sum of its proper divisors (1).

51530025653 is an equidigital number, since it uses as much as digits as its factorization.

51530025653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67500, while the sum is 35.

The spelling of 51530025653 in words is "fifty-one billion, five hundred thirty million, twenty-five thousand, six hundred fifty-three".