123553166 has 32 divisors (see below), whose sum is σ = 215930880. Its totient is φ = 52466400.

The previous prime is 123553163. The next prime is 123553169. The reversal of 123553166 is 661355321.

It is an interprime number because it is at equal distance from previous prime (123553163) and next prime (123553169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123553163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16655 + ... + 22901.

It is an arithmetic number, because the mean of its divisors is an integer number (6747840).

Almost surely, 2^123553166 is an apocalyptic number.

123553166 is a deficient number, since it is larger than the sum of its proper divisors (92377714).

123553166 is a wasteful number, since it uses less digits than its factorization.

123553166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6320.

The product of its digits is 16200, while the sum is 32.

The square root of 123553166 is about 11115.4471794886. The cubic root of 123553166 is about 498.0633968204.

The spelling of 123553166 in words is "one hundred twenty-three million, five hundred fifty-three thousand, one hundred sixty-six".