154550521121 has 8 divisors (see below), whose sum is σ = 155508534720. Its totient is φ = 153595313872.

The previous prime is 154550521117. The next prime is 154550521133. The reversal of 154550521121 is 121125055451.

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 154550521121 - 2² = 154550521117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154550521621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591050 + ... + 811443.

It is an arithmetic number, because the mean of its divisors is an integer number (19438566840).

Almost surely, 2^154550521121 is an apocalyptic number.

It is an amenable number.

154550521121 is a deficient number, since it is larger than the sum of its proper divisors (958013599).

154550521121 is a wasteful number, since it uses less digits than its factorization.

154550521121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403175.

The product of its (nonzero) digits is 10000, while the sum is 32.

Adding to 154550521121 its reverse (121125055451), we get a palindrome (275675576572).

The spelling of 154550521121 in words is "one hundred fifty-four billion, five hundred fifty million, five hundred twenty-one thousand, one hundred twenty-one".