556742057 has 2 divisors, whose sum is σ = 556742058. Its totient is φ = 556742056.

The previous prime is 556742003. The next prime is 556742077. The reversal of 556742057 is 750247655.

556742057 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., 548074921 + 8667136 = 23411^2 + 2944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556742057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (556742077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278371028 + 278371029.

It is an arithmetic number, because the mean of its divisors is an integer number (278371029).

Almost surely, 2^556742057 is an apocalyptic number.

It is an amenable number.

556742057 is a deficient number, since it is larger than the sum of its proper divisors (1).

556742057 is an equidigital number, since it uses as much as digits as its factorization.

556742057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294000, while the sum is 41.

The square root of 556742057 is about 23595.3821117608. The cubic root of 556742057 is about 822.6555081471.

The spelling of 556742057 in words is "five hundred fifty-six million, seven hundred forty-two thousand, fifty-seven".