51602533481 has 2 divisors, whose sum is σ = 51602533482. Its totient is φ = 51602533480.

The previous prime is 51602533441. The next prime is 51602533529. The reversal of 51602533481 is 18433520615.

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., 40789861225 + 10812672256 = 201965^2 + 103984^2 .

It is a cyclic number.

It is not a de Polignac number, because 51602533481 - 2⁶ = 51602533417 is a prime.

It is a super-2 number, since 2×51602533481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51602533441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25801266740 + 25801266741.

It is an arithmetic number, because the mean of its divisors is an integer number (25801266741).

Almost surely, 2^51602533481 is an apocalyptic number.

It is an amenable number.

51602533481 is a deficient number, since it is larger than the sum of its proper divisors (1).

51602533481 is an equidigital number, since it uses as much as digits as its factorization.

51602533481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 51602533481 in words is "fifty-one billion, six hundred two million, five hundred thirty-three thousand, four hundred eighty-one".