551530120 has 32 divisors (see below), whose sum is σ = 1283736600. Its totient is φ = 213004288.

The previous prime is 551530093. The next prime is 551530121. The reversal of 551530120 is 21035155.

551530120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 253000836 + 298529284 = 15906^2 + 17278^2 .

It is a junction number, because it is equal to n+sod(n) for n = 551530091 and 551530100.

It is not an unprimeable number, because it can be changed into a prime (551530121) 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, 236569 + ... + 238888.

Almost surely, 2^551530120 is an apocalyptic number.

It is an amenable number.

551530120 is an abundant number, since it is smaller than the sum of its proper divisors (732206480).

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

551530120 is a wasteful number, since it uses less digits than its factorization.

551530120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475497 (or 475493 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 551530120 is about 23484.6784095503. The cubic root of 551530120 is about 820.0803609524.

Adding to 551530120 its reverse (21035155), we get a palindrome (572565275).

The spelling of 551530120 in words is "five hundred fifty-one million, five hundred thirty thousand, one hundred twenty".