55551061057 has 2 divisors, whose sum is σ = 55551061058. Its totient is φ = 55551061056.

The previous prime is 55551061021. The next prime is 55551061067. The reversal of 55551061057 is 75016015555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55503119281 + 47941776 = 235591^2 + 6924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55551061057 is a prime.

It is not a weakly prime, because it can be changed into another prime (55551061067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775530528 + 27775530529.

It is an arithmetic number, because the mean of its divisors is an integer number (27775530529).

Almost surely, 2^55551061057 is an apocalyptic number.

It is an amenable number.

55551061057 is a deficient number, since it is larger than the sum of its proper divisors (1).

55551061057 is an equidigital number, since it uses as much as digits as its factorization.

55551061057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131250, while the sum is 40.

The spelling of 55551061057 in words is "fifty-five billion, five hundred fifty-one million, sixty-one thousand, fifty-seven".