154421801 has 4 divisors (see below), whose sum is σ = 156726672. Its totient is φ = 152116932.

The previous prime is 154421789. The next prime is 154421803. The reversal of 154421801 is 108124451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 154421801 - 2⁶ = 154421737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (154421803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152335 + ... + 1152468.

It is an arithmetic number, because the mean of its divisors is an integer number (39181668).

Almost surely, 2^154421801 is an apocalyptic number.

It is an amenable number.

154421801 is a deficient number, since it is larger than the sum of its proper divisors (2304871).

154421801 is an equidigital number, since it uses as much as digits as its factorization.

154421801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304870.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 154421801 is about 12426.6568714196. The cubic root of 154421801 is about 536.4997670807.

The spelling of 154421801 in words is "one hundred fifty-four million, four hundred twenty-one thousand, eight hundred one".