3550052021 has 4 divisors (see below), whose sum is σ = 3556039212. Its totient is φ = 3544064832.

The previous prime is 3550051991. The next prime is 3550052029. The reversal of 3550052021 is 1202500553.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2738428900 + 811623121 = 52330^2 + 28489^2 .

It is a cyclic number.

It is not a de Polignac number, because 3550052021 - 2¹⁸ = 3549789877 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 (3550052029) 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, 2992706 + ... + 2993891.

It is an arithmetic number, because the mean of its divisors is an integer number (889009803).

Almost surely, 2^3550052021 is an apocalyptic number.

It is an amenable number.

3550052021 is a deficient number, since it is larger than the sum of its proper divisors (5987191).

3550052021 is an equidigital number, since it uses as much as digits as its factorization.

3550052021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987190.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 3550052021 is about 59582.3129880001. The cubic root of 3550052021 is about 1525.4977532753.

Adding to 3550052021 its reverse (1202500553), we get a palindrome (4752552574).

The spelling of 3550052021 in words is "three billion, five hundred fifty million, fifty-two thousand, twenty-one".