551343031 has 16 divisors (see below), whose sum is σ = 614204640. Its totient is φ = 492549120.

The previous prime is 551343019. The next prime is 551343077. The reversal of 551343031 is 130343155.

It is a cyclic number.

It is not a de Polignac number, because 551343031 - 2²⁵ = 517788599 is a prime.

It is a super-2 number, since 2×551343031² = 607958275664533922, 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 = 551342987 and 551343005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551343131) 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 15 ways as a sum of consecutive naturals, for example, 15100 + ... + 36478.

It is an arithmetic number, because the mean of its divisors is an integer number (38387790).

Almost surely, 2^551343031 is an apocalyptic number.

551343031 is a deficient number, since it is larger than the sum of its proper divisors (62861609).

551343031 is a wasteful number, since it uses less digits than its factorization.

551343031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21474.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 551343031 is about 23480.6948576911. The cubic root of 551343031 is about 819.9876217644.

Adding to 551343031 its reverse (130343155), we get a palindrome (681686186).

The spelling of 551343031 in words is "five hundred fifty-one million, three hundred forty-three thousand, thirty-one".