154421441 has 2 divisors, whose sum is σ = 154421442. Its totient is φ = 154421440.

The previous prime is 154421429. The next prime is 154421453. The reversal of 154421441 is 144124451.

It is a balanced prime because it is at equal distance from previous prime (154421429) and next prime (154421453).

It can be written as a sum of positive squares in only one way, i.e., 151167025 + 3254416 = 12295^2 + 1804^2 .

It is a cyclic number.

It is not a de Polignac number, because 154421441 - 2¹⁰ = 154420417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 154421441.

It is not a weakly prime, because it can be changed into another prime (154421401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77210720 + 77210721.

It is an arithmetic number, because the mean of its divisors is an integer number (77210721).

Almost surely, 2^154421441 is an apocalyptic number.

It is an amenable number.

154421441 is a deficient number, since it is larger than the sum of its proper divisors (1).

154421441 is an equidigital number, since it uses as much as digits as its factorization.

154421441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 26.

The square root of 154421441 is about 12426.6423864212. The cubic root of 154421441 is about 536.4993501705.

Adding to 154421441 its reverse (144124451), we get a palindrome (298545892).

The spelling of 154421441 in words is "one hundred fifty-four million, four hundred twenty-one thousand, four hundred forty-one".