55552320389737 has 2 divisors, whose sum is σ = 55552320389738. Its totient is φ = 55552320389736.

The previous prime is 55552320389723. The next prime is 55552320389749. The reversal of 55552320389737 is 73798302325555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54785695813696 + 766624576041 = 7401736^2 + 875571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55552320389737 is a prime.

It is not a weakly prime, because it can be changed into another prime (55552320309737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27776160194868 + 27776160194869.

It is an arithmetic number, because the mean of its divisors is an integer number (27776160194869).

Almost surely, 2^{55552320389737} is an apocalyptic number.

It is an amenable number.

55552320389737 is a deficient number, since it is larger than the sum of its proper divisors (1).

55552320389737 is an equidigital number, since it uses as much as digits as its factorization.

55552320389737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140000, while the sum is 64.

The spelling of 55552320389737 in words is "fifty-five trillion, five hundred fifty-two billion, three hundred twenty million, three hundred eighty-nine thousand, seven hundred thirty-seven".