55120530449 has 2 divisors, whose sum is σ = 55120530450. Its totient is φ = 55120530448.

The previous prime is 55120530401. The next prime is 55120530511. The reversal of 55120530449 is 94403502155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51794932225 + 3325598224 = 227585^2 + 57668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55120530449 is a prime.

It is a super-2 number, since 2×55120530449² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55120532449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27560265224 + 27560265225.

It is an arithmetic number, because the mean of its divisors is an integer number (27560265225).

Almost surely, 2^55120530449 is an apocalyptic number.

It is an amenable number.

55120530449 is a deficient number, since it is larger than the sum of its proper divisors (1).

55120530449 is an equidigital number, since it uses as much as digits as its factorization.

55120530449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 55120530449 in words is "fifty-five billion, one hundred twenty million, five hundred thirty thousand, four hundred forty-nine".