154617121 has 8 divisors (see below), whose sum is σ = 158681600. Its totient is φ = 150574032.

The previous prime is 154617107. The next prime is 154617149. The reversal of 154617121 is 121716451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154617121 - 2¹⁷ = 154486049 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 154617121.

It is not an unprimeable number, because it can be changed into a prime (154617161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9856 + ... + 20158.

It is an arithmetic number, because the mean of its divisors is an integer number (19835200).

Almost surely, 2^154617121 is an apocalyptic number.

It is an amenable number.

154617121 is a deficient number, since it is larger than the sum of its proper divisors (4064479).

154617121 is a wasteful number, since it uses less digits than its factorization.

154617121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10695.

The product of its digits is 1680, while the sum is 28.

The square root of 154617121 is about 12434.5132996833. The cubic root of 154617121 is about 536.7258685424.

The spelling of 154617121 in words is "one hundred fifty-four million, six hundred seventeen thousand, one hundred twenty-one".