551542120 has 16 divisors (see below), whose sum is σ = 1240969860. Its totient is φ = 220616832.

The previous prime is 551542087. The next prime is 551542141. The reversal of 551542120 is 21245155.

It can be written as a sum of positive squares in 2 ways, for example, as 462164004 + 89378116 = 21498^2 + 9454^2 .

It is a super-3 number, since 3×551542120³ (a number of 27 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 6894237 + ... + 6894316.

Almost surely, 2^551542120 is an apocalyptic number.

It is an amenable number.

551542120 is an abundant number, since it is smaller than the sum of its proper divisors (689427740).

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

551542120 is a wasteful number, since it uses less digits than its factorization.

551542120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13788564 (or 13788560 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 551542120 is about 23484.9338938818. The cubic root of 551542120 is about 820.0863085834.

Adding to 551542120 its reverse (21245155), we get a palindrome (572787275).

The spelling of 551542120 in words is "five hundred fifty-one million, five hundred forty-two thousand, one hundred twenty".