551663530 has 16 divisors (see below), whose sum is σ = 1083266784. Its totient is φ = 200604880.

The previous prime is 551663521. The next prime is 551663531. The reversal of 551663530 is 35366155.

551663530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (551663531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2507452 + ... + 2507671.

It is an arithmetic number, because the mean of its divisors is an integer number (67704174).

Almost surely, 2^551663530 is an apocalyptic number.

551663530 is a deficient number, since it is larger than the sum of its proper divisors (531603254).

551663530 is a wasteful number, since it uses less digits than its factorization.

551663530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015141.

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 551663530 is about 23487.5186003120. The cubic root of 551663530 is about 820.1464788890.

The spelling of 551663530 in words is "five hundred fifty-one million, six hundred sixty-three thousand, five hundred thirty".