5570166221 has 4 divisors (see below), whose sum is σ = 5720711292. Its totient is φ = 5419621152.

The previous prime is 5570166209. The next prime is 5570166241. The reversal of 5570166221 is 1226610755.

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 5388294025 + 181872196 = 73405^2 + 13486^2 .

It is a cyclic number.

It is not a de Polignac number, because 5570166221 - 2¹⁸ = 5569904077 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 (5570166241) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 75272480 + ... + 75272553.

It is an arithmetic number, because the mean of its divisors is an integer number (1430177823).

Almost surely, 2^5570166221 is an apocalyptic number.

It is an amenable number.

5570166221 is a deficient number, since it is larger than the sum of its proper divisors (150545071).

5570166221 is a wasteful number, since it uses less digits than its factorization.

5570166221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150545070.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 5570166221 is about 74633.5462175020. The cubic root of 5570166221 is about 1772.6488710889.

Adding to 5570166221 its reverse (1226610755), we get a palindrome (6796776976).

The spelling of 5570166221 in words is "five billion, five hundred seventy million, one hundred sixty-six thousand, two hundred twenty-one".