551530242 has 32 divisors (see below), whose sum is σ = 1251705600. Its totient is φ = 179931024.

The previous prime is 551530211. The next prime is 551530247. The reversal of 551530242 is 242035155.

It is a happy number.

551530242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (551530247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106117 + ... + 111192.

It is an arithmetic number, because the mean of its divisors is an integer number (39115800).

Almost surely, 2^551530242 is an apocalyptic number.

551530242 is an abundant number, since it is smaller than the sum of its proper divisors (700175358).

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

551530242 is a wasteful number, since it uses less digits than its factorization.

551530242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217367 (or 217361 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 551530242 is about 23484.6810069884. The cubic root of 551530242 is about 820.0804214204.

Adding to 551530242 its reverse (242035155), we get a palindrome (793565397).

The spelling of 551530242 in words is "five hundred fifty-one million, five hundred thirty thousand, two hundred forty-two".