551115438 has 8 divisors (see below), whose sum is σ = 1102230888. Its totient is φ = 183705144.

The previous prime is 551115413. The next prime is 551115451. The reversal of 551115438 is 834511155.

It is a happy number.

551115438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

551115438 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 551115399 and 551115408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45926281 + ... + 45926292.

It is an arithmetic number, because the mean of its divisors is an integer number (137778861).

Almost surely, 2^551115438 is an apocalyptic number.

551115438 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.

551115438 is a wasteful number, since it uses less digits than its factorization.

551115438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91852578.

The product of its digits is 12000, while the sum is 33.

The square root of 551115438 is about 23475.8479719051. The cubic root of 551115438 is about 819.8747766344.

The spelling of 551115438 in words is "five hundred fifty-one million, one hundred fifteen thousand, four hundred thirty-eight".