55530380369 has 2 divisors, whose sum is σ = 55530380370. Its totient is φ = 55530380368.

The previous prime is 55530380359. The next prime is 55530380393. The reversal of 55530380369 is 96308303555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29691425344 + 25838955025 = 172312^2 + 160745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55530380369 is a prime.

It is a super-2 number, since 2×55530380369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55530380359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765190184 + 27765190185.

It is an arithmetic number, because the mean of its divisors is an integer number (27765190185).

Almost surely, 2^55530380369 is an apocalyptic number.

It is an amenable number.

55530380369 is a deficient number, since it is larger than the sum of its proper divisors (1).

55530380369 is an equidigital number, since it uses as much as digits as its factorization.

55530380369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458000, while the sum is 47.

The spelling of 55530380369 in words is "fifty-five billion, five hundred thirty million, three hundred eighty thousand, three hundred sixty-nine".