551921036 has 6 divisors (see below), whose sum is σ = 965861820. Its totient is φ = 275960516.

The previous prime is 551921023. The next prime is 551921059. The reversal of 551921036 is 630129155.

It is a junction number, because it is equal to n+sod(n) for n = 551920993 and 551921011.

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, 68990126 + ... + 68990133.

It is an arithmetic number, because the mean of its divisors is an integer number (160976970).

Almost surely, 2^551921036 is an apocalyptic number.

It is an amenable number.

551921036 is a deficient number, since it is larger than the sum of its proper divisors (413940784).

551921036 is a wasteful number, since it uses less digits than its factorization.

551921036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137980263 (or 137980261 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 551921036 is about 23492.9997233218. Note that the first 3 decimals coincide. The cubic root of 551921036 is about 820.2740686099.

The spelling of 551921036 in words is "five hundred fifty-one million, nine hundred twenty-one thousand, thirty-six".