350055550021 has 4 divisors (see below), whose sum is σ = 350056864332. Its totient is φ = 350054235712.

The previous prime is 350055549971. The next prime is 350055550037. The reversal of 350055550021 is 120055550053.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 120055550053 = 79 ⋅1519690507.

It can be written as a sum of positive squares in 2 ways, for example, as 293227665025 + 56827884996 = 541505^2 + 238386^2 .

It is a cyclic number.

It is not a de Polignac number, because 350055550021 - 2¹¹ = 350055547973 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 (350055550051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100426 + ... + 842731.

It is an arithmetic number, because the mean of its divisors is an integer number (87514216083).

Almost surely, 2^350055550021 is an apocalyptic number.

It is an amenable number.

350055550021 is a deficient number, since it is larger than the sum of its proper divisors (1314311).

350055550021 is an equidigital number, since it uses as much as digits as its factorization.

350055550021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314310.

The product of its (nonzero) digits is 18750, while the sum is 31.

The spelling of 350055550021 in words is "three hundred fifty billion, fifty-five million, five hundred fifty thousand, twenty-one".