55480013 has 2 divisors, whose sum is σ = 55480014. Its totient is φ = 55480012.

The previous prime is 55480003. The next prime is 55480063. The reversal of 55480013 is 31008455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32228329 + 23251684 = 5677^2 + 4822^2 .

It is a cyclic number.

It is not a de Polignac number, because 55480013 - 2⁴ = 55479997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55480003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27740006 + 27740007.

It is an arithmetic number, because the mean of its divisors is an integer number (27740007).

Almost surely, 2^55480013 is an apocalyptic number.

It is an amenable number.

55480013 is a deficient number, since it is larger than the sum of its proper divisors (1).

55480013 is an equidigital number, since it uses as much as digits as its factorization.

55480013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 55480013 is about 7448.4906524745. The cubic root of 55480013 is about 381.3983864565.

Adding to 55480013 its reverse (31008455), we get a palindrome (86488468).

The spelling of 55480013 in words is "fifty-five million, four hundred eighty thousand, thirteen".