551030331 has 4 divisors (see below), whose sum is σ = 734707112. Its totient is φ = 367353552.

The previous prime is 551030329. The next prime is 551030339. The reversal of 551030331 is 133030155.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 551030331 - 2¹ = 551030329 is a prime.

It is a super-2 number, since 2×551030331² = 607268851363939122, 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 = 551030298 and 551030307.

It is not an unprimeable number, because it can be changed into a prime (551030339) 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 3 ways as a sum of consecutive naturals, for example, 91838386 + ... + 91838391.

It is an arithmetic number, because the mean of its divisors is an integer number (183676778).

Almost surely, 2^551030331 is an apocalyptic number.

551030331 is a deficient number, since it is larger than the sum of its proper divisors (183676781).

551030331 is a wasteful number, since it uses less digits than its factorization.

551030331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183676780.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 551030331 is about 23474.0352517414. The cubic root of 551030331 is about 819.8325709125.

Adding to 551030331 its reverse (133030155), we get a palindrome (684060486).

The spelling of 551030331 in words is "five hundred fifty-one million, thirty thousand, three hundred thirty-one".