551404424 has 8 divisors (see below), whose sum is σ = 1033883310. Its totient is φ = 275702208.

The previous prime is 551404417. The next prime is 551404433. The reversal of 551404424 is 424404155.

It can be written as a sum of positive squares in only one way, i.e., 551404324 + 100 = 23482^2 + 10^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34462769 + ... + 34462784.

Almost surely, 2^551404424 is an apocalyptic number.

It is an amenable number.

551404424 is a deficient number, since it is larger than the sum of its proper divisors (482478886).

551404424 is a wasteful number, since it uses less digits than its factorization.

551404424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68925559 (or 68925555 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 551404424 is about 23482.0021292904. The cubic root of 551404424 is about 820.0180563147.

Adding to 551404424 its reverse (424404155), we get a palindrome (975808579).

The spelling of 551404424 in words is "five hundred fifty-one million, four hundred four thousand, four hundred twenty-four".