551863938 has 8 divisors (see below), whose sum is σ = 1103727888. Its totient is φ = 183954644.

The previous prime is 551863937. The next prime is 551863951. The reversal of 551863938 is 839368155.

It is a sphenic number, since it is the product of 3 distinct primes.

551863938 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (551863937) 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, 45988656 + ... + 45988667.

It is an arithmetic number, because the mean of its divisors is an integer number (137965986).

Almost surely, 2^551863938 is an apocalyptic number.

551863938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

551863938 is a wasteful number, since it uses less digits than its factorization.

551863938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91977328.

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

The square root of 551863938 is about 23491.7844788343. The cubic root of 551863938 is about 820.2457809740.

The spelling of 551863938 in words is "five hundred fifty-one million, eight hundred sixty-three thousand, nine hundred thirty-eight".