551355331 has 8 divisors (see below), whose sum is σ = 577939824. Its totient is φ = 525396480.

The previous prime is 551355293. The next prime is 551355341. The reversal of 551355331 is 133553155.

It is a happy number.

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 551355331 - 2²⁷ = 417137603 is a prime.

It is a super-2 number, since 2×551355331² = 607985402044239122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551355293 and 551355302.

It is not an unprimeable number, because it can be changed into a prime (551355341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154606 + ... + 158131.

It is an arithmetic number, because the mean of its divisors is an integer number (72242478).

Almost surely, 2^551355331 is an apocalyptic number.

551355331 is a deficient number, since it is larger than the sum of its proper divisors (26584493).

551355331 is a wasteful number, since it uses less digits than its factorization.

551355331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312821.

The product of its digits is 16875, while the sum is 31.

The square root of 551355331 is about 23480.9567735218. The cubic root of 551355331 is about 819.9937194641.

The spelling of 551355331 in words is "five hundred fifty-one million, three hundred fifty-five thousand, three hundred thirty-one".