551444242401 has 48 divisors (see below), whose sum is σ = 923948625600. Its totient is φ = 314013200256.

The previous prime is 551444242399. The next prime is 551444242403. The reversal of 551444242401 is 104242444155.

551444242401 is a `hidden beast` number, since 5 + 5 + 1 + 4 + 4 + 4 + 242 + 401 = 666.

It is an interprime number because it is at equal distance from previous prime (551444242399) and next prime (551444242403).

It is not a de Polignac number, because 551444242401 - 2¹ = 551444242399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551444242403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2788866 + ... + 2980043.

It is an arithmetic number, because the mean of its divisors is an integer number (19248929700).

Almost surely, 2^551444242401 is an apocalyptic number.

It is an amenable number.

551444242401 is a deficient number, since it is larger than the sum of its proper divisors (372504383199).

551444242401 is a wasteful number, since it uses less digits than its factorization.

551444242401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5768990 (or 5768987 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

Adding to 551444242401 its reverse (104242444155), we get a palindrome (655686686556).

The spelling of 551444242401 in words is "five hundred fifty-one billion, four hundred forty-four million, two hundred forty-two thousand, four hundred one".