166502241 has 6 divisors (see below), whose sum is σ = 240503250. Its totient is φ = 111001488.

The previous prime is 166502239. The next prime is 166502243. The reversal of 166502241 is 142205661.

166502241 is a `hidden beast` number, since 1 + 6 + 650 + 2 + 2 + 4 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (166502239) and next prime (166502243).

It can be written as a sum of positive squares in only one way, i.e., 155750400 + 10751841 = 12480^2 + 3279^2 .

It is not a de Polignac number, because 166502241 - 2¹ = 166502239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166502243) 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, 9250116 + ... + 9250133.

It is an arithmetic number, because the mean of its divisors is an integer number (40083875).

Almost surely, 2^166502241 is an apocalyptic number.

It is an amenable number.

166502241 is a deficient number, since it is larger than the sum of its proper divisors (74001009).

166502241 is a wasteful number, since it uses less digits than its factorization.

166502241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18500255 (or 18500252 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 166502241 is about 12903.5747372579. The cubic root of 166502241 is about 550.1401747399.

The spelling of 166502241 in words is "one hundred sixty-six million, five hundred two thousand, two hundred forty-one".