55312732757 has 2 divisors, whose sum is σ = 55312732758. Its totient is φ = 55312732756.

The previous prime is 55312732747. The next prime is 55312732781. The reversal of 55312732757 is 75723721355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54237286321 + 1075446436 = 232889^2 + 32794^2 .

It is a cyclic number.

It is not a de Polignac number, because 55312732757 - 2²⁴ = 55295955541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55312732747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27656366378 + 27656366379.

It is an arithmetic number, because the mean of its divisors is an integer number (27656366379).

Almost surely, 2^55312732757 is an apocalyptic number.

It is an amenable number.

55312732757 is a deficient number, since it is larger than the sum of its proper divisors (1).

55312732757 is an equidigital number, since it uses as much as digits as its factorization.

55312732757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1543500, while the sum is 47.

The spelling of 55312732757 in words is "fifty-five billion, three hundred twelve million, seven hundred thirty-two thousand, seven hundred fifty-seven".