51655362541 has 2 divisors, whose sum is σ = 51655362542. Its totient is φ = 51655362540.

The previous prime is 51655362511. The next prime is 51655362593. The reversal of 51655362541 is 14526355615.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27559320100 + 24096042441 = 166010^2 + 155229^2 .

It is a cyclic number.

It is not a de Polignac number, because 51655362541 - 2¹⁹ = 51654838253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51655362511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25827681270 + 25827681271.

It is an arithmetic number, because the mean of its divisors is an integer number (25827681271).

Almost surely, 2^51655362541 is an apocalyptic number.

It is an amenable number.

51655362541 is a deficient number, since it is larger than the sum of its proper divisors (1).

51655362541 is an equidigital number, since it uses as much as digits as its factorization.

51655362541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540000, while the sum is 43.

The spelling of 51655362541 in words is "fifty-one billion, six hundred fifty-five million, three hundred sixty-two thousand, five hundred forty-one".