52777994561 has 2 divisors, whose sum is σ = 52777994562. Its totient is φ = 52777994560.

The previous prime is 52777994539. The next prime is 52777994567. The reversal of 52777994561 is 16549977725.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43798536961 + 8979457600 = 209281^2 + 94760^2 .

It is a cyclic number.

It is not a de Polignac number, because 52777994561 - 2¹⁰ = 52777993537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52777994494 and 52777994503.

It is not a weakly prime, because it can be changed into another prime (52777994567) 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, 26388997280 + 26388997281.

It is an arithmetic number, because the mean of its divisors is an integer number (26388997281).

Almost surely, 2^52777994561 is an apocalyptic number.

It is an amenable number.

52777994561 is a deficient number, since it is larger than the sum of its proper divisors (1).

52777994561 is an equidigital number, since it uses as much as digits as its factorization.

52777994561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33339600, while the sum is 62.

The spelling of 52777994561 in words is "fifty-two billion, seven hundred seventy-seven million, nine hundred ninety-four thousand, five hundred sixty-one".