5551111057 has 2 divisors, whose sum is σ = 5551111058. Its totient is φ = 5551111056.

The previous prime is 5551111043. The next prime is 5551111061. The reversal of 5551111057 is 7501111555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3911751936 + 1639359121 = 62544^2 + 40489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5551111057 is a prime.

It is not a weakly prime, because it can be changed into another prime (5551111087) 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, 2775555528 + 2775555529.

It is an arithmetic number, because the mean of its divisors is an integer number (2775555529).

Almost surely, 2^5551111057 is an apocalyptic number.

It is an amenable number.

5551111057 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551111057 is an equidigital number, since it uses as much as digits as its factorization.

5551111057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4375, while the sum is 31.

The square root of 5551111057 is about 74505.7786819251. The cubic root of 5551111057 is about 1770.6251908530.

The spelling of 5551111057 in words is "five billion, five hundred fifty-one million, one hundred eleven thousand, fifty-seven".