551838872 has 16 divisors (see below), whose sum is σ = 1114290240. Its totient is φ = 254694816.

The previous prime is 551838871. The next prime is 551838997. The reversal of 551838872 is 278838155.

It is a super-2 number, since 2×551838872² = 609052281300464768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551838871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2652968 + ... + 2653175.

It is an arithmetic number, because the mean of its divisors is an integer number (69643140).

Almost surely, 2^551838872 is an apocalyptic number.

551838872 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

551838872 is an abundant number, since it is smaller than the sum of its proper divisors (562451368).

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

551838872 is a wasteful number, since it uses less digits than its factorization.

551838872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306162 (or 5306158 counting only the distinct ones).

The product of its digits is 537600, while the sum is 47.

The square root of 551838872 is about 23491.2509671154. The cubic root of 551838872 is about 820.2333620964.

The spelling of 551838872 in words is "five hundred fifty-one million, eight hundred thirty-eight thousand, eight hundred seventy-two".