154429081 has 2 divisors, whose sum is σ = 154429082. Its totient is φ = 154429080.

The previous prime is 154429069. The next prime is 154429097. The reversal of 154429081 is 180924451.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128255625 + 26173456 = 11325^2 + 5116^2 .

It is a cyclic number.

It is not a de Polignac number, because 154429081 - 2⁵ = 154429049 is a prime.

It is a super-2 number, since 2×154429081² = 47696682117009122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154429021) 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 as a sum of consecutive naturals, namely, 77214540 + 77214541.

It is an arithmetic number, because the mean of its divisors is an integer number (77214541).

Almost surely, 2^154429081 is an apocalyptic number.

It is an amenable number.

154429081 is a deficient number, since it is larger than the sum of its proper divisors (1).

154429081 is an equidigital number, since it uses as much as digits as its factorization.

154429081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 154429081 is about 12426.9497866532. The cubic root of 154429081 is about 536.5081977921.

It can be divided in two parts, 1544 and 29081, that added together give a square (30625 = 175²).

The spelling of 154429081 in words is "one hundred fifty-four million, four hundred twenty-nine thousand, eighty-one".