153168661 has 16 divisors (see below), whose sum is σ = 166561920. Its totient is φ = 140462080.

The previous prime is 153168649. The next prime is 153168667. The reversal of 153168661 is 166861351.

It is a cyclic number.

It is not a de Polignac number, because 153168661 - 2⁹ = 153168149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 153168661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153168667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54261 + ... + 57013.

It is an arithmetic number, because the mean of its divisors is an integer number (10410120).

Almost surely, 2^153168661 is an apocalyptic number.

It is an amenable number.

153168661 is a deficient number, since it is larger than the sum of its proper divisors (13393259).

153168661 is a wasteful number, since it uses less digits than its factorization.

153168661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876.

The product of its digits is 25920, while the sum is 37.

The square root of 153168661 is about 12376.1327158366. The cubic root of 153168661 is about 535.0445835848.

The spelling of 153168661 in words is "one hundred fifty-three million, one hundred sixty-eight thousand, six hundred sixty-one".