51183204517 has 2 divisors, whose sum is σ = 51183204518. Its totient is φ = 51183204516.

The previous prime is 51183204463. The next prime is 51183204533. The reversal of 51183204517 is 71540238115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36064288836 + 15118915681 = 189906^2 + 122959^2 .

It is a cyclic number.

It is not a de Polignac number, because 51183204517 - 2²⁷ = 51048986789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51183204217) 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, 25591602258 + 25591602259.

It is an arithmetic number, because the mean of its divisors is an integer number (25591602259).

Almost surely, 2^51183204517 is an apocalyptic number.

It is an amenable number.

51183204517 is a deficient number, since it is larger than the sum of its proper divisors (1).

51183204517 is an equidigital number, since it uses as much as digits as its factorization.

51183204517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 51183204517 in words is "fifty-one billion, one hundred eighty-three million, two hundred four thousand, five hundred seventeen".