154633121 has 4 divisors (see below), whose sum is σ = 156164244. Its totient is φ = 153102000.

The previous prime is 154633111. The next prime is 154633183. The reversal of 154633121 is 121336451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 133656721 + 20976400 = 11561^2 + 4580^2 .

It is a cyclic number.

It is not a de Polignac number, because 154633121 - 2⁶ = 154633057 is a prime.

It is a super-2 number, since 2×154633121² = 47822804220401282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154633111) 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, 765410 + ... + 765611.

It is an arithmetic number, because the mean of its divisors is an integer number (39041061).

Almost surely, 2^154633121 is an apocalyptic number.

It is an amenable number.

154633121 is a deficient number, since it is larger than the sum of its proper divisors (1531123).

154633121 is a wasteful number, since it uses less digits than its factorization.

154633121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531122.

The product of its digits is 2160, while the sum is 26.

The square root of 154633121 is about 12435.1566536172. The cubic root of 154633121 is about 536.7443816230.

Adding to 154633121 its reverse (121336451), we get a palindrome (275969572).

The spelling of 154633121 in words is "one hundred fifty-four million, six hundred thirty-three thousand, one hundred twenty-one".