551353332521 has 8 divisors (see below), whose sum is σ = 563306962944. Its totient is φ = 539518644000.

The previous prime is 551353332479. The next prime is 551353332527. The reversal of 551353332521 is 125233353155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551353332521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551353332527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29726105 + ... + 29744646.

It is an arithmetic number, because the mean of its divisors is an integer number (70413370368).

Almost surely, 2^551353332521 is an apocalyptic number.

It is an amenable number.

551353332521 is a deficient number, since it is larger than the sum of its proper divisors (11953630423).

551353332521 is a wasteful number, since it uses less digits than its factorization.

551353332521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59470951.

The product of its digits is 202500, while the sum is 38.

Adding to 551353332521 its reverse (125233353155), we get a palindrome (676586685676).

The spelling of 551353332521 in words is "five hundred fifty-one billion, three hundred fifty-three million, three hundred thirty-two thousand, five hundred twenty-one".