154046221 has 8 divisors (see below), whose sum is σ = 176212544. Its totient is φ = 131919840.

The previous prime is 154046219. The next prime is 154046251. The reversal of 154046221 is 122640451.

It is a happy number.

154046221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 154046221 - 2¹ = 154046219 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 (154046251) 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, 1200 + ... + 17593.

It is an arithmetic number, because the mean of its divisors is an integer number (22026568).

Almost surely, 2^154046221 is an apocalyptic number.

It is an amenable number.

154046221 is a deficient number, since it is larger than the sum of its proper divisors (22166323).

154046221 is a wasteful number, since it uses less digits than its factorization.

154046221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19971.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 154046221 is about 12411.5358034371. The cubic root of 154046221 is about 536.0644611807.

Adding to 154046221 its reverse (122640451), we get a palindrome (276686672).

The spelling of 154046221 in words is "one hundred fifty-four million, forty-six thousand, two hundred twenty-one".