54445513 has 2 divisors, whose sum is σ = 54445514. Its totient is φ = 54445512.

The previous prime is 54445511. The next prime is 54445519. The reversal of 54445513 is 31554445.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50168889 + 4276624 = 7083^2 + 2068^2 .

It is a cyclic number.

It is not a de Polignac number, because 54445513 - 2¹ = 54445511 is a prime.

Together with 54445511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (54445511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27222756 + 27222757.

It is an arithmetic number, because the mean of its divisors is an integer number (27222757).

Almost surely, 2^54445513 is an apocalyptic number.

It is an amenable number.

54445513 is a deficient number, since it is larger than the sum of its proper divisors (1).

54445513 is an equidigital number, since it uses as much as digits as its factorization.

54445513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 31.

The square root of 54445513 is about 7378.7202820001. The cubic root of 54445513 is about 379.0129345841.

Adding to 54445513 its reverse (31554445), we get a palindrome (85999958).

The spelling of 54445513 in words is "fifty-four million, four hundred forty-five thousand, five hundred thirteen".