166051653 has 4 divisors (see below), whose sum is σ = 221402208. Its totient is φ = 110701100.

The previous prime is 166051619. The next prime is 166051663. The reversal of 166051653 is 356150661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166051653 - 2⁸ = 166051397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166051663) 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 3 ways as a sum of consecutive naturals, for example, 27675273 + ... + 27675278.

It is an arithmetic number, because the mean of its divisors is an integer number (55350552).

Almost surely, 2^166051653 is an apocalyptic number.

It is an amenable number.

166051653 is a deficient number, since it is larger than the sum of its proper divisors (55350555).

166051653 is an equidigital number, since it uses as much as digits as its factorization.

166051653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55350554.

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

The square root of 166051653 is about 12886.1030959713. The cubic root of 166051653 is about 549.6434636919.

The spelling of 166051653 in words is "one hundred sixty-six million, fifty-one thousand, six hundred fifty-three".