551211414421 has 8 divisors (see below), whose sum is σ = 552307952000. Its totient is φ = 550115701632.

The previous prime is 551211414329. The next prime is 551211414449. The reversal of 551211414421 is 124414112155.

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-551211414421 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 (551211454421) 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, 1140466 + ... + 1550188.

It is an arithmetic number, because the mean of its divisors is an integer number (69038494000).

Almost surely, 2^551211414421 is an apocalyptic number.

It is an amenable number.

551211414421 is a deficient number, since it is larger than the sum of its proper divisors (1096537579).

551211414421 is a wasteful number, since it uses less digits than its factorization.

551211414421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412395.

The product of its digits is 6400, while the sum is 31.

Adding to 551211414421 its reverse (124414112155), we get a palindrome (675625526576).

The spelling of 551211414421 in words is "five hundred fifty-one billion, two hundred eleven million, four hundred fourteen thousand, four hundred twenty-one".