551444242403 has 2 divisors, whose sum is σ = 551444242404. Its totient is φ = 551444242402.

The previous prime is 551444242399. The next prime is 551444242409. The reversal of 551444242403 is 304242444155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551444242403 - 2² = 551444242399 is a prime.

It is not a weakly prime, because it can be changed into another prime (551444242409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275722121201 + 275722121202.

It is an arithmetic number, because the mean of its divisors is an integer number (275722121202).

Almost surely, 2^551444242403 is an apocalyptic number.

551444242403 is a deficient number, since it is larger than the sum of its proper divisors (1).

551444242403 is an equidigital number, since it uses as much as digits as its factorization.

551444242403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 551444242403 its reverse (304242444155), we get a palindrome (855686686558).

The spelling of 551444242403 in words is "five hundred fifty-one billion, four hundred forty-four million, two hundred forty-two thousand, four hundred three".