551354150221 has 12 divisors (see below), whose sum is σ = 637802347552. Its totient is φ = 466895384136.

The previous prime is 551354150209. The next prime is 551354150251. The reversal of 551354150221 is 122051453155.

It is not a de Polignac number, because 551354150221 - 2¹⁵ = 551354117453 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 (551354150251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5668491 + ... + 5764936.

Almost surely, 2^551354150221 is an apocalyptic number.

It is an amenable number.

551354150221 is a deficient number, since it is larger than the sum of its proper divisors (86448197331).

551354150221 is an equidigital number, since it uses as much as digits as its factorization.

551354150221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11433600 (or 11433517 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 551354150221 in words is "five hundred fifty-one billion, three hundred fifty-four million, one hundred fifty thousand, two hundred twenty-one".