5551003 has 2 divisors, whose sum is σ = 5551004. Its totient is φ = 5551002.

The previous prime is 5550997. The next prime is 5551037. The reversal of 5551003 is 3001555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5551003 - 2⁹ = 5550491 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (5551603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775501 + 2775502.

It is an arithmetic number, because the mean of its divisors is an integer number (2775502).

Almost surely, 2^5551003 is an apocalyptic number.

5551003 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551003 is an equidigital number, since it uses as much as digits as its factorization.

5551003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 5551003 is about 2356.0566631556. The cubic root of 5551003 is about 177.0613701880.

Adding to 5551003 its reverse (3001555), we get a palindrome (8552558).

The spelling of 5551003 in words is "five million, five hundred fifty-one thousand, three".