51002205473 has 2 divisors, whose sum is σ = 51002205474. Its totient is φ = 51002205472.

The previous prime is 51002205433. The next prime is 51002205481. The reversal of 51002205473 is 37450220015.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50011718689 + 990486784 = 223633^2 + 31472^2 .

It is a cyclic number.

It is not a de Polignac number, because 51002205473 - 2⁶ = 51002205409 is a prime.

It is a super-2 number, since 2×51002205473² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51002205403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25501102736 + 25501102737.

It is an arithmetic number, because the mean of its divisors is an integer number (25501102737).

Almost surely, 2^51002205473 is an apocalyptic number.

It is an amenable number.

51002205473 is a deficient number, since it is larger than the sum of its proper divisors (1).

51002205473 is an equidigital number, since it uses as much as digits as its factorization.

51002205473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

Adding to 51002205473 its reverse (37450220015), we get a palindrome (88452425488).

The spelling of 51002205473 in words is "fifty-one billion, two million, two hundred five thousand, four hundred seventy-three".