166155241 has 8 divisors (see below), whose sum is σ = 190335744. Its totient is φ = 142085760.

The previous prime is 166155211. The next prime is 166155259. The reversal of 166155241 is 142551661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166155241 - 2¹³ = 166147049 is a prime.

It is a super-2 number, since 2×166155241² = 55215128223536162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166155211) 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 7 ways as a sum of consecutive naturals, for example, 24520 + ... + 30553.

It is an arithmetic number, because the mean of its divisors is an integer number (23791968).

Almost surely, 2^166155241 is an apocalyptic number.

It is an amenable number.

166155241 is a deficient number, since it is larger than the sum of its proper divisors (24180503).

166155241 is an equidigital number, since it uses as much as digits as its factorization.

166155241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55511.

The product of its digits is 7200, while the sum is 31.

The square root of 166155241 is about 12890.1218380588. The cubic root of 166155241 is about 549.7577346243.

The spelling of 166155241 in words is "one hundred sixty-six million, one hundred fifty-five thousand, two hundred forty-one".