551242554413 has 4 divisors (see below), whose sum is σ = 551248981920. Its totient is φ = 551236126908.

The previous prime is 551242554299. The next prime is 551242554433. The reversal of 551242554413 is 314455242155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551242554413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551242554433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3083345 + ... + 3257222.

It is an arithmetic number, because the mean of its divisors is an integer number (137812245480).

Almost surely, 2^551242554413 is an apocalyptic number.

It is an amenable number.

551242554413 is a deficient number, since it is larger than the sum of its proper divisors (6427507).

551242554413 is an equidigital number, since it uses as much as digits as its factorization.

551242554413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427506.

The product of its digits is 480000, while the sum is 41.

Adding to 551242554413 its reverse (314455242155), we get a palindrome (865697796568).

The spelling of 551242554413 in words is "five hundred fifty-one billion, two hundred forty-two million, five hundred fifty-four thousand, four hundred thirteen".