53555320057 has 2 divisors, whose sum is σ = 53555320058. Its totient is φ = 53555320056.

The previous prime is 53555320009. The next prime is 53555320073. The reversal of 53555320057 is 75002355535.

53555320057 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., 28623225856 + 24932094201 = 169184^2 + 157899^2 .

It is a cyclic number.

It is not a de Polignac number, because 53555320057 - 2¹⁹ = 53554795769 is a prime.

It is not a weakly prime, because it can be changed into another prime (53555320157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26777660028 + 26777660029.

It is an arithmetic number, because the mean of its divisors is an integer number (26777660029).

Almost surely, 2^53555320057 is an apocalyptic number.

It is an amenable number.

53555320057 is a deficient number, since it is larger than the sum of its proper divisors (1).

53555320057 is an equidigital number, since it uses as much as digits as its factorization.

53555320057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393750, while the sum is 40.

The spelling of 53555320057 in words is "fifty-three billion, five hundred fifty-five million, three hundred twenty thousand, fifty-seven".