154421455 has 16 divisors (see below), whose sum is σ = 206534880. Its totient is φ = 110149632.

The previous prime is 154421453. The next prime is 154421483. The reversal of 154421455 is 554124451.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 154421455 - 2¹ = 154421453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154421453) 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, 46194 + ... + 49423.

It is an arithmetic number, because the mean of its divisors is an integer number (12908430).

Almost surely, 2^154421455 is an apocalyptic number.

154421455 is a deficient number, since it is larger than the sum of its proper divisors (52113425).

154421455 is a wasteful number, since it uses less digits than its factorization.

154421455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95658.

The product of its digits is 16000, while the sum is 31.

The square root of 154421455 is about 12426.6429497270. The cubic root of 154421455 is about 536.4993663837.

The spelling of 154421455 in words is "one hundred fifty-four million, four hundred twenty-one thousand, four hundred fifty-five".