55563331757 has 2 divisors, whose sum is σ = 55563331758. Its totient is φ = 55563331756.

The previous prime is 55563331729. The next prime is 55563331781. The reversal of 55563331757 is 75713336555.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38937550276 + 16625781481 = 197326^2 + 128941^2 .

It is a cyclic number.

It is not a de Polignac number, because 55563331757 - 2¹⁸ = 55563069613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55563331717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27781665878 + 27781665879.

It is an arithmetic number, because the mean of its divisors is an integer number (27781665879).

Almost surely, 2^55563331757 is an apocalyptic number.

It is an amenable number.

55563331757 is a deficient number, since it is larger than the sum of its proper divisors (1).

55563331757 is an equidigital number, since it uses as much as digits as its factorization.

55563331757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4961250, while the sum is 50.

The spelling of 55563331757 in words is "fifty-five billion, five hundred sixty-three million, three hundred thirty-one thousand, seven hundred fifty-seven".