551651533143131 has 4 divisors (see below), whose sum is σ = 551654972334600. Its totient is φ = 551648093951664.

The previous prime is 551651533143097. The next prime is 551651533143133. The reversal of 551651533143131 is 131341335156155.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551651533143131 is a prime.

It is a super-2 number, since 2×551651533143131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551651533143133) 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, 1719355121 + ... + 1719675938.

It is an arithmetic number, because the mean of its divisors is an integer number (137913743083650).

Almost surely, 2^{551651533143131} is an apocalyptic number.

551651533143131 is a deficient number, since it is larger than the sum of its proper divisors (3439191469).

551651533143131 is a wasteful number, since it uses less digits than its factorization.

551651533143131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439191468.

The product of its digits is 1215000, while the sum is 47.

Adding to 551651533143131 its reverse (131341335156155), we get a palindrome (682992868299286).

The spelling of 551651533143131 in words is "five hundred fifty-one trillion, six hundred fifty-one billion, five hundred thirty-three million, one hundred forty-three thousand, one hundred thirty-one".