51553034461 has 2 divisors, whose sum is σ = 51553034462. Its totient is φ = 51553034460.

The previous prime is 51553034453. The next prime is 51553034483. The reversal of 51553034461 is 16443035515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51123923236 + 429111225 = 226106^2 + 20715^2 .

It is a cyclic number.

It is not a de Polignac number, because 51553034461 - 2³ = 51553034453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51553034461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51553034161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25776517230 + 25776517231.

It is an arithmetic number, because the mean of its divisors is an integer number (25776517231).

Almost surely, 2^51553034461 is an apocalyptic number.

It is an amenable number.

51553034461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51553034461 is an equidigital number, since it uses as much as digits as its factorization.

51553034461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 51553034461 its reverse (16443035515), we get a palindrome (67996069976).

The spelling of 51553034461 in words is "fifty-one billion, five hundred fifty-three million, thirty-four thousand, four hundred sixty-one".