166441550 has 96 divisors (see below), whose sum is σ = 354539808. Its totient is φ = 58080000.

The previous prime is 166441549. The next prime is 166441559. The reversal of 166441550 is 55144661.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166441559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2728520 + ... + 2728580.

It is an arithmetic number, because the mean of its divisors is an integer number (3693123).

Almost surely, 2^166441550 is an apocalyptic number.

166441550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166441550 is an abundant number, since it is smaller than the sum of its proper divisors (188098258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166441550 is a wasteful number, since it uses less digits than its factorization.

166441550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 166441550 is about 12901.2228102610. Note that the first 3 decimals coincide. The cubic root of 166441550 is about 550.0733235577.

The spelling of 166441550 in words is "one hundred sixty-six million, four hundred forty-one thousand, five hundred fifty".