154355121 has 12 divisors (see below), whose sum is σ = 236072772. Its totient is φ = 96850176.

The previous prime is 154355111. The next prime is 154355129. The reversal of 154355121 is 121553451.

It can be written as a sum of positive squares in 2 ways, for example, as 143065521 + 11289600 = 11961^2 + 3360^2 .

It is not a de Polignac number, because 154355121 - 2⁹ = 154354609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154355129) 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 11 ways as a sum of consecutive naturals, for example, 504276 + ... + 504581.

It is an arithmetic number, because the mean of its divisors is an integer number (19672731).

Almost surely, 2^154355121 is an apocalyptic number.

It is an amenable number.

154355121 is a deficient number, since it is larger than the sum of its proper divisors (81717651).

154355121 is a wasteful number, since it uses less digits than its factorization.

154355121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008880 (or 1008877 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 154355121 is about 12423.9736397016. The cubic root of 154355121 is about 536.4225349917.

The spelling of 154355121 in words is "one hundred fifty-four million, three hundred fifty-five thousand, one hundred twenty-one".