55516003 has 2 divisors, whose sum is σ = 55516004. Its totient is φ = 55516002.

The previous prime is 55516001. The next prime is 55516049. The reversal of 55516003 is 30061555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55516003 - 2¹ = 55516001 is a prime.

Together with 55516001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55516001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27758001 + 27758002.

It is an arithmetic number, because the mean of its divisors is an integer number (27758002).

Almost surely, 2^55516003 is an apocalyptic number.

55516003 is a deficient number, since it is larger than the sum of its proper divisors (1).

55516003 is an equidigital number, since it uses as much as digits as its factorization.

55516003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 55516003 is about 7450.9061864984. The cubic root of 55516003 is about 381.4808399390.

Adding to 55516003 its reverse (30061555), we get a palindrome (85577558).

The spelling of 55516003 in words is "fifty-five million, five hundred sixteen thousand, three".