166531022 has 16 divisors (see below), whose sum is σ = 288310752. Its totient is φ = 70663200.

The previous prime is 166531019. The next prime is 166531033. The reversal of 166531022 is 220135661.

It is a junction number, because it is equal to n+sod(n) for n = 166530982 and 166531000.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 57473 + ... + 60300.

It is an arithmetic number, because the mean of its divisors is an integer number (18019422).

Almost surely, 2^166531022 is an apocalyptic number.

166531022 is a deficient number, since it is larger than the sum of its proper divisors (121779730).

166531022 is a wasteful number, since it uses less digits than its factorization.

166531022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117883.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 166531022 is about 12904.6899226599. The cubic root of 166531022 is about 550.1718713546.

Adding to 166531022 its reverse (220135661), we get a palindrome (386666683).

The spelling of 166531022 in words is "one hundred sixty-six million, five hundred thirty-one thousand, twenty-two".