166822533 has 6 divisors (see below), whose sum is σ = 240965894. Its totient is φ = 111215016.

The previous prime is 166822517. The next prime is 166822549. The reversal of 166822533 is 335228661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (166822517) and next prime (166822549).

It can be written as a sum of positive squares in only one way, i.e., 112402404 + 54420129 = 10602^2 + 7377^2 .

It is not a de Polignac number, because 166822533 - 2⁴ = 166822517 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 (166822553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9267910 + ... + 9267927.

Almost surely, 2^166822533 is an apocalyptic number.

It is an amenable number.

166822533 is a deficient number, since it is larger than the sum of its proper divisors (74143361).

166822533 is a wasteful number, since it uses less digits than its factorization.

166822533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18535843 (or 18535840 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 166822533 is about 12915.9797537779. The cubic root of 166822533 is about 550.4927077959.

The spelling of 166822533 in words is "one hundred sixty-six million, eight hundred twenty-two thousand, five hundred thirty-three".