166242453 has 16 divisors (see below), whose sum is σ = 242073216. Its totient is φ = 100860480.

The previous prime is 166242451. The next prime is 166242463. The reversal of 166242453 is 354242661.

It is not a de Polignac number, because 166242453 - 2¹ = 166242451 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166242451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27250 + ... + 32787.

It is an arithmetic number, because the mean of its divisors is an integer number (15129576).

Almost surely, 2^166242453 is an apocalyptic number.

166242453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166242453 is a deficient number, since it is larger than the sum of its proper divisors (75830763).

166242453 is a wasteful number, since it uses less digits than its factorization.

166242453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60124.

The product of its digits is 34560, while the sum is 33.

The square root of 166242453 is about 12893.5042947990. The cubic root of 166242453 is about 549.8539038958.

The spelling of 166242453 in words is "one hundred sixty-six million, two hundred forty-two thousand, four hundred fifty-three".