166653051 has 4 divisors (see below), whose sum is σ = 222204072. Its totient is φ = 111102032.

The previous prime is 166653031. The next prime is 166653059. The reversal of 166653051 is 150356661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166653051 - 2⁹ = 166652539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166653059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27775506 + ... + 27775511.

It is an arithmetic number, because the mean of its divisors is an integer number (55551018).

Almost surely, 2^166653051 is an apocalyptic number.

166653051 is a deficient number, since it is larger than the sum of its proper divisors (55551021).

166653051 is an equidigital number, since it uses as much as digits as its factorization.

166653051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55551020.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 166653051 is about 12909.4171440852. The cubic root of 166653051 is about 550.3062217607.

The spelling of 166653051 in words is "one hundred sixty-six million, six hundred fifty-three thousand, fifty-one".