154164661 has 4 divisors (see below), whose sum is σ = 176188192. Its totient is φ = 132141132.

The previous prime is 154164649. The next prime is 154164677. The reversal of 154164661 is 166461451.

154164661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 154164661 - 2²³ = 145776053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154164641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11011755 + ... + 11011768.

It is an arithmetic number, because the mean of its divisors is an integer number (44047048).

Almost surely, 2^154164661 is an apocalyptic number.

It is an amenable number.

154164661 is a deficient number, since it is larger than the sum of its proper divisors (22023531).

154164661 is an equidigital number, since it uses as much as digits as its factorization.

154164661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22023530.

The product of its digits is 17280, while the sum is 34.

The square root of 154164661 is about 12416.3062542771. The cubic root of 154164661 is about 536.2018121855.

The spelling of 154164661 in words is "one hundred fifty-four million, one hundred sixty-four thousand, six hundred sixty-one".