551404043 has 4 divisors (see below), whose sum is σ = 551619288. Its totient is φ = 551188800.

The previous prime is 551404033. The next prime is 551404067. The reversal of 551404043 is 340404155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 551404043 - 2¹⁰ = 551403019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551404033) 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 3 ways as a sum of consecutive naturals, for example, 103733 + ... + 108918.

It is an arithmetic number, because the mean of its divisors is an integer number (137904822).

Almost surely, 2^551404043 is an apocalyptic number.

551404043 is a deficient number, since it is larger than the sum of its proper divisors (215245).

551404043 is a wasteful number, since it uses less digits than its factorization.

551404043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215244.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 551404043 is about 23481.9940166929. The cubic root of 551404043 is about 820.0178674473.

Adding to 551404043 its reverse (340404155), we get a palindrome (891808198).

The spelling of 551404043 in words is "five hundred fifty-one million, four hundred four thousand, forty-three".