166573143 has 12 divisors (see below), whose sum is σ = 262479048. Its totient is φ = 100953360.

The previous prime is 166573109. The next prime is 166573177. The reversal of 166573143 is 341375661.

It is an interprime number because it is at equal distance from previous prime (166573109) and next prime (166573177).

It is not a de Polignac number, because 166573143 - 2²¹ = 164475991 is a prime.

It is a super-2 number, since 2×166573143² = 55493223937796898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166573098 and 166573107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166573103) 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 11 ways as a sum of consecutive naturals, for example, 841180 + ... + 841377.

It is an arithmetic number, because the mean of its divisors is an integer number (21873254).

Almost surely, 2^166573143 is an apocalyptic number.

166573143 is a deficient number, since it is larger than the sum of its proper divisors (95905905).

166573143 is a wasteful number, since it uses less digits than its factorization.

166573143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682574 (or 1682571 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 166573143 is about 12906.3218230447. The cubic root of 166573143 is about 550.2182527747.

The spelling of 166573143 in words is "one hundred sixty-six million, five hundred seventy-three thousand, one hundred forty-three".