551322444431 has 8 divisors (see below), whose sum is σ = 603081479424. Its totient is φ = 499836544920.

The previous prime is 551322444427. The next prime is 551322444433. The reversal of 551322444431 is 134444223155.

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

It is a cyclic number.

It is not a de Polignac number, because 551322444431 - 2² = 551322444427 is a prime.

It is a super-2 number, since 2×551322444431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551322444433) 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, 68279645 + ... + 68287718.

It is an arithmetic number, because the mean of its divisors is an integer number (75385184928).

Almost surely, 2^551322444431 is an apocalyptic number.

551322444431 is a deficient number, since it is larger than the sum of its proper divisors (51759034993).

551322444431 is a wasteful number, since it uses less digits than its factorization.

551322444431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136567741.

The product of its digits is 230400, while the sum is 38.

Adding to 551322444431 its reverse (134444223155), we get a palindrome (685766667586).

The spelling of 551322444431 in words is "five hundred fifty-one billion, three hundred twenty-two million, four hundred forty-four thousand, four hundred thirty-one".