551021230 has 16 divisors (see below), whose sum is σ = 1003789584. Its totient is φ = 217752640.

The previous prime is 551021227. The next prime is 551021243. The reversal of 551021230 is 32120155.

It is a junction number, because it is equal to n+sod(n) for n = 551021198 and 551021207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331111 + ... + 332770.

It is an arithmetic number, because the mean of its divisors is an integer number (62736849).

Almost surely, 2^551021230 is an apocalyptic number.

551021230 is a deficient number, since it is larger than the sum of its proper divisors (452768354).

551021230 is a wasteful number, since it uses less digits than its factorization.

551021230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663971.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 551021230 is about 23473.8413984588. The cubic root of 551021230 is about 819.8280573453.

Adding to 551021230 its reverse (32120155), we get a palindrome (583141385).

The spelling of 551021230 in words is "five hundred fifty-one million, twenty-one thousand, two hundred thirty".