51535432441 has 2 divisors, whose sum is σ = 51535432442. Its totient is φ = 51535432440.

The previous prime is 51535432369. The next prime is 51535432451. The reversal of 51535432441 is 14423453515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48743366841 + 2792065600 = 220779^2 + 52840^2 .

It is a cyclic number.

It is not a de Polignac number, because 51535432441 - 2²⁷ = 51401214713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51535432441.

It is not a weakly prime, because it can be changed into another prime (51535432451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25767716220 + 25767716221.

It is an arithmetic number, because the mean of its divisors is an integer number (25767716221).

Almost surely, 2^51535432441 is an apocalyptic number.

It is an amenable number.

51535432441 is a deficient number, since it is larger than the sum of its proper divisors (1).

51535432441 is an equidigital number, since it uses as much as digits as its factorization.

51535432441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 37.

Adding to 51535432441 its reverse (14423453515), we get a palindrome (65958885956).

The spelling of 51535432441 in words is "fifty-one billion, five hundred thirty-five million, four hundred thirty-two thousand, four hundred forty-one".