51504711653 has 2 divisors, whose sum is σ = 51504711654. Its totient is φ = 51504711652.

The previous prime is 51504711619. The next prime is 51504711667. The reversal of 51504711653 is 35611740515.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27099085924 + 24405625729 = 164618^2 + 156223^2 .

It is a cyclic number.

It is not a de Polignac number, because 51504711653 - 2⁸ = 51504711397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51504711683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25752355826 + 25752355827.

It is an arithmetic number, because the mean of its divisors is an integer number (25752355827).

Almost surely, 2^51504711653 is an apocalyptic number.

It is an amenable number.

51504711653 is a deficient number, since it is larger than the sum of its proper divisors (1).

51504711653 is an equidigital number, since it uses as much as digits as its factorization.

51504711653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 51504711653 in words is "fifty-one billion, five hundred four million, seven hundred eleven thousand, six hundred fifty-three".