154454421 has 16 divisors (see below), whose sum is σ = 230142528. Its totient is φ = 91324800.

The previous prime is 154454411. The next prime is 154454423. The reversal of 154454421 is 124454451.

It is not a de Polignac number, because 154454421 - 2⁶ = 154454357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154454423) 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 15 ways as a sum of consecutive naturals, for example, 55726 + ... + 58431.

It is an arithmetic number, because the mean of its divisors is an integer number (14383908).

Almost surely, 2^154454421 is an apocalyptic number.

154454421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

154454421 is a deficient number, since it is larger than the sum of its proper divisors (75688107).

154454421 is a wasteful number, since it uses less digits than its factorization.

154454421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114212.

The product of its digits is 12800, while the sum is 30.

The square root of 154454421 is about 12427.9693031484. The cubic root of 154454421 is about 536.5375410870.

Adding to 154454421 its sum of digits (30), we get a palindrome (154454451).

The spelling of 154454421 in words is "one hundred fifty-four million, four hundred fifty-four thousand, four hundred twenty-one".