55756431359 has 2 divisors, whose sum is σ = 55756431360. Its totient is φ = 55756431358.

The previous prime is 55756431347. The next prime is 55756431439. The reversal of 55756431359 is 95313465755.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55756431359 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55756431359.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55756431659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27878215679 + 27878215680.

It is an arithmetic number, because the mean of its divisors is an integer number (27878215680).

Almost surely, 2^55756431359 is an apocalyptic number.

55756431359 is a deficient number, since it is larger than the sum of its proper divisors (1).

55756431359 is an equidigital number, since it uses as much as digits as its factorization.

55756431359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8505000, while the sum is 53.

The spelling of 55756431359 in words is "fifty-five billion, seven hundred fifty-six million, four hundred thirty-one thousand, three hundred fifty-nine".