551651016 has 128 divisors (see below), whose sum is σ = 1693440000. Its totient is φ = 149276736.

The previous prime is 551651011. The next prime is 551651017. The reversal of 551651016 is 610156155.

It is a super-3 number, since 3×551651016³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (551651011) 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 31 ways as a sum of consecutive naturals, for example, 154645 + ... + 158171.

It is an arithmetic number, because the mean of its divisors is an integer number (13230000).

Almost surely, 2^551651016 is an apocalyptic number.

551651016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551651016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846720000).

551651016 is an abundant number, since it is smaller than the sum of its proper divisors (1141788984).

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

551651016 is a wasteful number, since it uses less digits than its factorization.

551651016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576 (or 3558 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 551651016 is about 23487.2522019925. The cubic root of 551651016 is about 820.1402774093.

The spelling of 551651016 in words is "five hundred fifty-one million, six hundred fifty-one thousand, sixteen".