51294174553 has 2 divisors, whose sum is σ = 51294174554. Its totient is φ = 51294174552.

The previous prime is 51294174541. The next prime is 51294174643. The reversal of 51294174553 is 35547149215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51258318409 + 35856144 = 226403^2 + 5988^2 .

It is a cyclic number.

It is not a de Polignac number, because 51294174553 - 2²¹ = 51292077401 is a prime.

It is not a weakly prime, because it can be changed into another prime (51294177553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25647087276 + 25647087277.

It is an arithmetic number, because the mean of its divisors is an integer number (25647087277).

Almost surely, 2^51294174553 is an apocalyptic number.

It is an amenable number.

51294174553 is a deficient number, since it is larger than the sum of its proper divisors (1).

51294174553 is an equidigital number, since it uses as much as digits as its factorization.

51294174553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 46.

The spelling of 51294174553 in words is "fifty-one billion, two hundred ninety-four million, one hundred seventy-four thousand, five hundred fifty-three".