551424666 has 32 divisors (see below), whose sum is σ = 1190327040. Its totient is φ = 169291584.

The previous prime is 551424649. The next prime is 551424677. The reversal of 551424666 is 666424155.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 28480 + ... + 43748.

It is an arithmetic number, because the mean of its divisors is an integer number (37197720).

Almost surely, 2^551424666 is an apocalyptic number.

551424666 is an abundant number, since it is smaller than the sum of its proper divisors (638902374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551424666 is a wasteful number, since it uses less digits than its factorization.

551424666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15750.

The product of its digits is 172800, while the sum is 39.

The square root of 551424666 is about 23482.4331362830. The cubic root of 551424666 is about 820.0280904515.

The spelling of 551424666 in words is "five hundred fifty-one million, four hundred twenty-four thousand, six hundred sixty-six".