551683938 has 48 divisors (see below), whose sum is σ = 1201387680. Its totient is φ = 168809472.

The previous prime is 551683927. The next prime is 551683991. The reversal of 551683938 is 839386155.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 194293 + ... + 197111.

It is an arithmetic number, because the mean of its divisors is an integer number (25028910).

Almost surely, 2^551683938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551683938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600693840).

551683938 is an abundant number, since it is smaller than the sum of its proper divisors (649703742).

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

551683938 is a wasteful number, since it uses less digits than its factorization.

551683938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043 (or 3030 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The square root of 551683938 is about 23487.9530398032. The cubic root of 551683938 is about 820.1565921447.

The spelling of 551683938 in words is "five hundred fifty-one million, six hundred eighty-three thousand, nine hundred thirty-eight".