551058221 has 8 divisors (see below), whose sum is σ = 643180800. Its totient is φ = 462285648.

The previous prime is 551058217. The next prime is 551058223. The reversal of 551058221 is 122850155.

551058221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551058221 - 2² = 551058217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551058223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 837146 + ... + 837803.

It is an arithmetic number, because the mean of its divisors is an integer number (80397600).

Almost surely, 2^551058221 is an apocalyptic number.

It is an amenable number.

551058221 is a deficient number, since it is larger than the sum of its proper divisors (92122579).

551058221 is a wasteful number, since it uses less digits than its factorization.

551058221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675003.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 551058221 is about 23474.6293048474. The cubic root of 551058221 is about 819.8464024226.

The spelling of 551058221 in words is "five hundred fifty-one million, fifty-eight thousand, two hundred twenty-one".