551344630 has 16 divisors (see below), whose sum is σ = 1016626464. Its totient is φ = 215158720.

The previous prime is 551344627. The next prime is 551344649. The reversal of 551344630 is 36443155.

It is a junction number, because it is equal to n+sod(n) for n = 551344592 and 551344601.

It is a congruent number.

It is an unprimeable number.

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, 671962 + ... + 672781.

It is an arithmetic number, because the mean of its divisors is an integer number (63539154).

Almost surely, 2^551344630 is an apocalyptic number.

551344630 is a deficient number, since it is larger than the sum of its proper divisors (465281834).

551344630 is a wasteful number, since it uses less digits than its factorization.

551344630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344791.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 551344630 is about 23480.7289069143. The cubic root of 551344630 is about 819.9884144705.

Adding to 551344630 its reverse (36443155), we get a palindrome (587787785).

The spelling of 551344630 in words is "five hundred fifty-one million, three hundred forty-four thousand, six hundred thirty".