551656116 has 96 divisors (see below), whose sum is σ = 1596672000. Its totient is φ = 163265760.

The previous prime is 551656099. The next prime is 551656117. The reversal of 551656116 is 611656155.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551656117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45685 + ... + 56483.

It is an arithmetic number, because the mean of its divisors is an integer number (16632000).

Almost surely, 2^551656116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551656116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798336000).

551656116 is an abundant number, since it is smaller than the sum of its proper divisors (1045015884).

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

551656116 is a wasteful number, since it uses less digits than its factorization.

551656116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10866 (or 10858 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 551656116 is about 23487.3607712744. The cubic root of 551656116 is about 820.1428047937.

The spelling of 551656116 in words is "five hundred fifty-one million, six hundred fifty-six thousand, one hundred sixteen".