51602054461 has 2 divisors, whose sum is σ = 51602054462. Its totient is φ = 51602054460.

The previous prime is 51602054453. The next prime is 51602054489. The reversal of 51602054461 is 16445020615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39812220900 + 11789833561 = 199530^2 + 108581^2 .

It is a cyclic number.

It is not a de Polignac number, because 51602054461 - 2³ = 51602054453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51602054401) 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, 25801027230 + 25801027231.

It is an arithmetic number, because the mean of its divisors is an integer number (25801027231).

Almost surely, 2^51602054461 is an apocalyptic number.

It is an amenable number.

51602054461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51602054461 is an equidigital number, since it uses as much as digits as its factorization.

51602054461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 51602054461 in words is "fifty-one billion, six hundred two million, fifty-four thousand, four hundred sixty-one".