154423201 has 4 divisors (see below), whose sum is σ = 155789892. Its totient is φ = 153056512.

The previous prime is 154423177. The next prime is 154423207. The reversal of 154423201 is 102324451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102324451 = 271 ⋅377581.

It can be written as a sum of positive squares in 2 ways, for example, as 86936976 + 67486225 = 9324^2 + 8215^2 .

It is a cyclic number.

It is not a de Polignac number, because 154423201 - 2⁵ = 154423169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154423207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683176 + ... + 683401.

It is an arithmetic number, because the mean of its divisors is an integer number (38947473).

Almost surely, 2^154423201 is an apocalyptic number.

It is an amenable number.

154423201 is a deficient number, since it is larger than the sum of its proper divisors (1366691).

154423201 is a wasteful number, since it uses less digits than its factorization.

154423201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366690.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 154423201 is about 12426.7132018084. The cubic root of 154423201 is about 536.5013883919.

Adding to 154423201 its reverse (102324451), we get a palindrome (256747652).

The spelling of 154423201 in words is "one hundred fifty-four million, four hundred twenty-three thousand, two hundred one".