551221662 has 32 divisors (see below), whose sum is σ = 1112368032. Its totient is φ = 182093184.

The previous prime is 551221639. The next prime is 551221679. The reversal of 551221662 is 266122155.

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 15 ways as a sum of consecutive naturals, for example, 712708 + ... + 713480.

It is an arithmetic number, because the mean of its divisors is an integer number (34761501).

Almost surely, 2^551221662 is an apocalyptic number.

551221662 is an abundant number, since it is smaller than the sum of its proper divisors (561146370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551221662 is a wasteful number, since it uses less digits than its factorization.

551221662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692.

The product of its digits is 7200, while the sum is 30.

The square root of 551221662 is about 23478.1102731885. The cubic root of 551221662 is about 819.9274484690.

The spelling of 551221662 in words is "five hundred fifty-one million, two hundred twenty-one thousand, six hundred sixty-two".