154794481 has 2 divisors, whose sum is σ = 154794482. Its totient is φ = 154794480.

The previous prime is 154794457. The next prime is 154794499. The reversal of 154794481 is 184497451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90554256 + 64240225 = 9516^2 + 8015^2 .

It is a cyclic number.

It is not a de Polignac number, because 154794481 - 2²¹ = 152697329 is a prime.

It is a super-2 number, since 2×154794481² = 47922662696118722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154794181) 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, 77397240 + 77397241.

It is an arithmetic number, because the mean of its divisors is an integer number (77397241).

Almost surely, 2^154794481 is an apocalyptic number.

It is an amenable number.

154794481 is a deficient number, since it is larger than the sum of its proper divisors (1).

154794481 is an equidigital number, since it uses as much as digits as its factorization.

154794481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The square root of 154794481 is about 12441.6430185084. The cubic root of 154794481 is about 536.9310146995.

The spelling of 154794481 in words is "one hundred fifty-four million, seven hundred ninety-four thousand, four hundred eighty-one".