154271449 has 2 divisors, whose sum is σ = 154271450. Its totient is φ = 154271448.

The previous prime is 154271363. The next prime is 154271477. The reversal of 154271449 is 944172451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128414224 + 25857225 = 11332^2 + 5085^2 .

It is a cyclic number.

It is not a de Polignac number, because 154271449 - 2¹³ = 154263257 is a prime.

It is a super-3 number, since 3×154271449³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (154271149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77135724 + 77135725.

It is an arithmetic number, because the mean of its divisors is an integer number (77135725).

Almost surely, 2^154271449 is an apocalyptic number.

It is an amenable number.

154271449 is a deficient number, since it is larger than the sum of its proper divisors (1).

154271449 is an equidigital number, since it uses as much as digits as its factorization.

154271449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 154271449 is about 12420.6058225837. The cubic root of 154271449 is about 536.3255904512.

The spelling of 154271449 in words is "one hundred fifty-four million, two hundred seventy-one thousand, four hundred forty-nine".