53985047477 has 2 divisors, whose sum is σ = 53985047478. Its totient is φ = 53985047476.

The previous prime is 53985047461. The next prime is 53985047489. The reversal of 53985047477 is 77474058935.

It is a happy number.

53985047477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30418499281 + 23566548196 = 174409^2 + 153514^2 .

It is a cyclic number.

It is not a de Polignac number, because 53985047477 - 2⁴ = 53985047461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53985047437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26992523738 + 26992523739.

It is an arithmetic number, because the mean of its divisors is an integer number (26992523739).

Almost surely, 2^53985047477 is an apocalyptic number.

It is an amenable number.

53985047477 is a deficient number, since it is larger than the sum of its proper divisors (1).

53985047477 is an equidigital number, since it uses as much as digits as its factorization.

53985047477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29635200, while the sum is 59.

The spelling of 53985047477 in words is "fifty-three billion, nine hundred eighty-five million, forty-seven thousand, four hundred seventy-seven".